Source : Webster's Revised Unabridged Dictionary (1913)

Milk \Milk\, n. [AS. meoluc, meoloc, meolc, milc; akin to
   OFries. meloc, D. melk, G. milch, OHG. miluh, Icel. mj?ok,
   Sw. mj["o]lk, Dan. melk, Goth. miluks, G. melken to milk,
   OHG. melchan, Lith. milszti, L. mulgere, Gr. ?. ????. Cf.
   {Milch}, {Emulsion}, {Milt} soft roe of fishes.]
   1. (Physiol.) A white fluid secreted by the mammary glands of
      female mammals for the nourishment of their young,
      consisting of minute globules of fat suspended in a
      solution of casein, albumin, milk sugar, and inorganic
      salts. ``White as morne milk.'' --Chaucer.

   2. (Bot.) A kind of juice or sap, usually white in color,
      found in certain plants; latex. See {Latex}.

   3. An emulsion made by bruising seeds; as, the milk of
      almonds, produced by pounding almonds with sugar and
      water.

   4. (Zo["o]l.) The ripe, undischarged spat of an oyster.

   {Condensed milk}. See under {Condense}, v. t.

   {Milk crust} (Med.), vesicular eczema occurring on the face
      and scalp of nursing infants. See {Eczema}.

   {Milk fever}.
      (a) (Med.) A fever which accompanies or precedes the first
          lactation. It is usually transitory.
      (b) (Vet. Surg.) A form puerperal peritonitis in cattle;
          also, a variety of meningitis occurring in cows after
          calving.

   {Milk glass}, glass having a milky appearance.

   {Milk knot} (Med.), a hard lump forming in the breast of a
      nursing woman, due to obstruction to the flow of milk and
      congestion of the mammary glands.

   {Milk leg} (Med.), a swollen condition of the leg, usually in
      puerperal women, caused by an inflammation of veins, and
      characterized by a white appearance occasioned by an
      accumulation of serum and sometimes of pus in the cellular
      tissue.

   {Milk meats}, food made from milk, as butter and cheese.
      [Obs.] --Bailey.

   {Milk mirror}. Same as {Escutcheon}, 2.

   {Milk molar} (Anat.), one of the deciduous molar teeth which
      are shed and replaced by the premolars.

   {Milk of lime} (Chem.), a watery emulsion of calcium hydrate,
      produced by macerating quicklime in water.

   {Milk parsley} (Bot.), an umbelliferous plant ({Peucedanum
      palustre}) of Europe and Asia, having a milky juice.

   {Milk pea} (Bot.), a genus ({Galactia}) of leguminous and,
      usually, twining plants.

   {Milk sickness} (Med.), a peculiar malignant disease,
      occurring in some parts of the Western United States, and
      affecting certain kinds of farm stock (esp. cows), and
      persons who make use of the meat or dairy products of
      infected cattle. Its chief symptoms in man are
      uncontrollable vomiting, obstinate constipation, pain, and
      muscular tremors. Its origin in cattle has been variously
      ascribed to the presence of certain plants in their food,
      and to polluted drinking water.

   {Milk snake} (Zo["o]l.), a harmless American snake
      ({Ophibolus triangulus}, or {O. eximius}). It is variously
      marked with white, gray, and red. Called also {milk
      adder}, {chicken snake}, {house snake}, etc.

   {Milk sugar}. (Physiol. Chem.) See {Lactose}, and {Sugar of
      milk} (below).

   {Milk thistle} (Bot.), an esculent European thistle ({Silybum
      marianum}), having the veins of its leaves of a milky
      whiteness.

   {Milk thrush}. (Med.) See {Thrush}.

   {Milk tooth} (Anat.), one of the temporary first set of teeth
      in young mammals; in man there are twenty.

   {Milk tree} (Bot.), a tree yielding a milky juice, as the cow
      tree of South America ({Brosimum Galactodendron}), and the
      {Euphorbia balsamifera} of the Canaries, the milk of both
      of which is wholesome food.

   {Milk vessel} (Bot.), a special cell in the inner bark of a
      plant, or a series of cells, in which the milky juice is
      contained. See {Latex}.

   {Rock milk}. See {Agaric mineral}, under {Agaric}.

   {Sugar of milk}. The sugar characteristic of milk; a hard
      white crystalline slightly sweet substance obtained by
      evaporation of the whey of milk. It is used in pellets and
      powder as a vehicle for homeopathic medicines, and as an
      article of diet. See {Lactose}.

Rock \Rock\, n. [OF. roke, F. roche; cf. Armor. roc'h, and AS.
   rocc.]
   1. A large concreted mass of stony material; a large fixed
      stone or crag. See {Stone}.

            Come one, come all! this rock shall fly From its
            firm base as soon as I.               --Sir W.
                                                  Scott.

   2. (Geol.) Any natural deposit forming a part of the earth's
      crust, whether consolidated or not, including sand, earth,
      clay, etc., when in natural beds.

   3. That which resembles a rock in firmness; a defense; a
      support; a refuge.

            The Lord is my rock, and my fortress. --2 Sam. xxii.
                                                  2.

   4. Fig.: Anything which causes a disaster or wreck resembling
      the wreck of a vessel upon a rock.

   5. (Zo["o]l.) The striped bass. See under {Bass}.

   Note: This word is frequently used in the formation of
         self-explaining compounds; as, rock-bound, rock-built,
         rock-ribbed, rock-roofed, and the like.

   {Rock alum}. [Probably so called by confusion with F. roche a
      rock.] Same as {Roche alum}.

   {Rock barnacle} (Zo["o]l.), a barnacle ({Balanus balanoides})
      very abundant on rocks washed by tides.

   {Rock bass}. (Zo["o]l.)
      (a) The stripped bass. See under {Bass}.
      (b) The goggle-eye.
      (c) The cabrilla. Other species are also locally called
          rock bass.

   {Rock builder} (Zo["o]l.), any species of animal whose
      remains contribute to the formation of rocks, especially
      the corals and Foraminifera.

   {Rock butter} (Min.), native alum mixed with clay and oxide
      of iron, usually in soft masses of a yellowish white
      color, occuring in cavities and fissures in argillaceous
      slate.

   {Rock candy}, a form of candy consisting of crystals of pure
      sugar which are very hard, whence the name.

   {Rock cavy}. (Zo["o]l.) See {Moco}.

   {Rock cod} (Zo["o]l.)
      (a) A small, often reddish or brown, variety of the cod
          found about rocks andledges.
      (b) A California rockfish.

   {Rock cook}. (Zo["o]l.)
      (a) A European wrasse ({Centrolabrus exoletus}).
      (b) A rockling.

   {Rock cork} (Min.), a variety of asbestus the fibers of which
      are loosely interlaced. It resembles cork in its texture.
      

   {Rock crab} (Zo["o]l.), any one of several species of large
      crabs of the genus {Cancer}, as the two species of the New
      England coast ({C. irroratus} and {C. borealis}). See
      Illust. under {Cancer}.

   {Rock cress} (Bot.), a name of several plants of the cress
      kind found on rocks, as {Arabis petr[ae]a}, {A. lyrata},
      etc.

   {Rock crystal} (Min.), limpid quartz. See {Quartz}, and under
      {Crystal}.

   {Rock dove} (Zo["o]l.), the rock pigeon; -- called also {rock
      doo}.

   {Rock drill}, an implement for drilling holes in rock; esp.,
      a machine impelled by steam or compressed air, for
      drilling holes for blasting, etc.

   {Rock duck} (Zo["o]l.), the harlequin duck.

   {Rock eel}. (Zo["o]l.) See {Gunnel}.

   {Rock goat} (Zo["o]l.), a wild goat, or ibex.

   {Rock hopper} (Zo["o]l.), a penguin of the genus
      {Catarractes}. See under {Penguin}.

   {Rock kangaroo}. (Zo["o]l.) See {Kangaroo}, and {Petrogale}.
      

   {Rock lobster} (Zo["o]l.), any one of several species of
      large spinose lobsters of the genera {Panulirus} and
      {Palinurus}. They have no large claws. Called also {spiny
      lobster}, and {sea crayfish}.

   {Rock meal} (Min.), a light powdery variety of calcite
      occuring as an efflorescence.

   {Rock milk}. (Min.) See {Agaric mineral}, under {Agaric}.

   {Rock moss}, a kind of lichen; the cudbear. See {Cudbear}.

   {Rock oil}. See {Petroleum}.

   {Rock parrakeet} (Zo["o]l.), a small Australian parrakeet
      ({Euphema petrophila}), which nests in holes among the
      rocks of high cliffs. Its general color is yellowish olive
      green; a frontal band and the outer edge of the wing
      quills are deep blue, and the central tail feathers bluish
      green.

   {Rock pigeon} (Zo["o]l.), the wild pigeon ({Columba livia})
      Of Europe and Asia, from which the domestic pigeon was
      derived. See Illust. under {Pigeon}.

   {Rock pipit}. (Zo["o]l.) See the Note under {Pipit}.

   {Rock plover}. (Zo["o]l.)
      (a) The black-bellied, or whistling, plover.
      (b) The rock snipe.

   {Rock ptarmigan} (Zo["o]l.), an arctic American ptarmigan
      ({Lagopus rupestris}), which in winter is white, with the
      tail and lores black. In summer the males are grayish
      brown, coarsely vermiculated with black, and have black
      patches on the back.

   {Rock rabbit} (Zo["o]l.), the hyrax. See {Cony}, and {Daman}.
      

   {Rock ruby} (Min.), a fine reddish variety of garnet.

   {Rock salt} (Min.), cloride of sodium (common salt) occuring
      in rocklike masses in mines; mineral salt; salt dug from
      the earth. In the United States this name is sometimes
      given to salt in large crystals, formed by evaporation
      from sea water in large basins or cavities.

   {Rock seal} (Zo["o]l.), the harbor seal. See {Seal}.

   {Rock shell} (Zo["o]l.), any species of Murex, Purpura, and
      allied genera.

   {Rock snake} (Zo["o]l.), any one of several large pythons;
      as, the royal rock snake ({Python regia}) of Africa, and
      the rock snake of India ({P. molurus}). The Australian
      rock snakes mostly belong to the allied genus {Morelia}.
      

   {Rock snipe} (Zo["o]l.), the purple sandpiper ({Tringa
      maritima}); -- called also {rock bird}, {rock plover},
      {winter snipe}.

   {Rock soap} (Min.), a kind of clay having a smooth, greasy
      feel, and adhering to the tongue.

   {Rock sparrow}. (Zo["o]l.)
      (a) Any one of several species of Old World sparrows of
          the genus {Petronia}, as {P. stulla}, of Europe.
      (b) A North American sparrow ({Puc[ae]a ruficeps}).

   {Rock tar}, petroleum.

   {Rock thrush} (Zo["o]l.), any Old World thrush of the genus
      {Monticola}, or {Petrocossyphus}; as, the European rock
      thrush ({M. saxatilis}), and the blue rock thrush of India
      ({M. cyaneus}), in which the male is blue throughout.

   {Rock tripe} (Bot.), a kind of lichen ({Umbilicaria
      Dillenii}) growing on rocks in the northen parts of
      America, and forming broad, flat, coriaceous, dark fuscous
      or blackish expansions. It has been used as food in cases
      of extremity.

   {Rock trout} (Zo["o]l.), any one of several species of marine
      food fishes of the genus {Hexagrammus}, family
      {Chirad[ae]}, native of the North Pacific coasts; --
      called also {sea trout}, {boregat}, {bodieron}, and
      {starling}.

   {Rock warbler} (Zo["o]l.), a small Australian singing bird
      ({Origma rubricata}) which frequents rocky ravines and
      water courses; -- called also {cataract bird}.

   {Rock wren} (Zo["o]l.), any one of several species of wrens
      of the genus {Salpinctes}, native of the arid plains of
      Lower California and Mexico.