Source : Webster's Revised Unabridged Dictionary (1913)

Hog \Hog\, n. [Prob. akin to E. hack to cut, and meaning orig.,
   a castrated boar; cf. also W. hwch swine, sow, Armor. houc'h,
   hoc'h. Cf. {Haggis}, {Hogget}, and {Hoggerel}.]
   1. (Zo["o]l.) A quadruped of the genus {Sus}, and allied
      genera of {Suid[ae]}; esp., the domesticated varieties of
      {S. scrofa}, kept for their fat and meat, called,
      respectively, {lard} and {pork}; swine; porker;
      specifically, a castrated boar; a barrow.

   Note: The domestic hogs of Siam, China, and parts of Southern
         Europe, are thought to have been derived from {Sus
         Indicus}.

   2. A mean, filthy, or gluttonous fellow. [Low.]

   3. A young sheep that has not been shorn. [Eng.]

   4. (Naut.) A rough, flat scrubbing broom for scrubbing a
      ship's bottom under water. --Totten.

   5. (Paper Manuf.) A device for mixing and stirring the pulp
      of which paper is made.

   {Bush hog}, {Ground hog}, etc.. See under {Bush}, {Ground},
      etc.

   {Hog caterpillar} (Zo["o]l.), the larva of the green
      grapevine sphinx; -- so called because the head and first
      three segments are much smaller than those behind them, so
      as to make a resemblance to a hog's snout. See {Hawk
      moth}.

   {Hog cholera}, an epidemic contagious fever of swine,
      attended by liquid, fetid, diarrhea, and by the appearance
      on the skin and mucous membrane of spots and patches of a
      scarlet, purple, or black color. It is fatal in from one
      to six days, or ends in a slow, uncertain recovery. --Law
      (Farmer's Veter. Adviser.)

   {Hog deer} (Zo["o]l.), the axis deer.

   {Hog gum} (Bot.), West Indian tree ({Symphonia globulifera}),
      yielding an aromatic gum.

   {Hog of wool}, the trade name for the fleece or wool of sheep
      of the second year.

   {Hog peanut} (Bot.), a kind of earth pea.

   {Hog plum} (Bot.), a tropical tree, of the genus {Spondias}
      ({S. lutea}), with fruit somewhat resembling plums, but
      chiefly eaten by hogs. It is found in the West Indies.

   {Hog's bean} (Bot.), the plant henbane.

   {Hog's bread}.(Bot.) See {Sow bread}.

   {Hog's fennel}. (Bot.) See under {Fennel}.

   {Mexican hog} (Zo["o]l.), the peccary.

   {Water hog}. (Zo["o]l.) See {Capybara}.