Source : Webster's Revised Unabridged Dictionary (1913)

Laurus \Lau"rus\, n. [L., laurel.] (Bot.)
   A genus of trees including, according to modern authors, only
   the true laurel ({Laurus nobilis}), and the larger {L.
   Canariensis} of Madeira and the Canary Islands. Formerly the
   sassafras, the camphor tree, the cinnamon tree, and several
   other aromatic trees and shrubs, were also referred to the
   genus {Laurus}.

Lauric \Lau"ric\, a.
   Pertaining to, or derived from, the European bay or laurel
   ({Laurus nobilis}).

   {Lauric acid} (Chem.), a white, crystalline substance,
      {C12H24O2}, resembling palmitic acid, and obtained from
      the fruit of the bay tree, and other sources.

Laurin \Lau"rin\, n. [Cf. F. laurine.] (Chem.)
   A white crystalline substance extracted from the fruit of the
   bay ({Laurus nobilis}), and consisting of a complex mixture
   of glycerin ethers of several organic acids.

Royal \Roy"al\, a. [OE. roial, riall, real, OF. roial. reial, F.
   royal, fr. L. regalis, fr. rex, regis, king. See {Rich}, and
   cf. {regal}, {real} a coin, {Rial}.]
   1. Kingly; pertaining to the crown or the sovereign; suitable
      for a king or queen; regal; as, royal power or
      prerogative; royal domains; the royal family; royal state.

   2. Noble; generous; magnificent; princely.

            How doth that royal merchant, good Antonio? --Shak.

   3. Under the patronage of royality; holding a charter granted
      by the sovereign; as, the Royal Academy of Arts; the Royal
      Society.

   {Battle royal}. See under {Battle}.

   {Royal bay} (Bot.), the classic laurel ({Laurus nobilis}.)

   {Royal eagle}. (Zo["o]l.) See {Golden eagle}, under {Golden}.
      

   {Royal fern} (Bot.), the handsome fern {Osmunda regalis}. See
      {Osmund}.

   {Royal mast} (Naut.), the mast next above the topgallant mast
      and usually the highest on a square-rigged vessel. The
      royal yard and royal sail are attached to the royal mast.
      

   {Royal metal}, an old name for gold.

   {Royal palm} (Bot.), a magnificent West Indian palm tree
      ({Oreodoxa regia}), lately discovered also in Florida.

   {Royal pheasant}. See {Curassow}.

   {Royal purple}, an intense violet color, verging toward blue.
      

   {Royal tern} (Zo["o]l.), a large, crested American tern
      ({Sterna maxima}).

   {Royal tiger}. (Zo["o]l.) See {Tiger}.

   {Royal touch}, the touching of a diseased person by the hand
      of a king, with the view of restoring to health; --
      formerly extensively practiced, particularly for the
      scrofula, or king's evil.

   Syn: Kingly; regal; monarchical; imperial; kinglike;
        princely; august; majestic; superb; splendid;
        illustrious; noble; magnanimous.

Sweetwood \Sweet"wood`\, n. (Bot.)
   (a) The true laurel ({Laurus nobilis}.)
   (b) The timber of the tree {Oreodaphne Leucoxylon}, growing
       in Jamaica. The name is also applied to the timber of
       several other related trees.

Bay \Bay\, n. [F. baie a berry, the fruit of the laurel and
   other trees, fr. L. baca, bacca, a small round fruit, a
   berry, akin to Lith. bapka laurel berry.]
   1. A berry, particularly of the laurel. [Obs.]

   2. The laurel tree ({Laurus nobilis}). Hence, in the plural,
      an honorary garland or crown bestowed as a prize for
      victory or excellence, anciently made or consisting of
      branches of the laurel.

            The patriot's honors and the poet's bays.
                                                  --Trumbull.

   3. A tract covered with bay trees. [Local, U. S.]

   {Bay leaf}, the leaf of the bay tree ({Laurus nobilis}). It
      has a fragrant odor and an aromatic taste.

Bay \Bay\, n. [F. baie a berry, the fruit of the laurel and
   other trees, fr. L. baca, bacca, a small round fruit, a
   berry, akin to Lith. bapka laurel berry.]
   1. A berry, particularly of the laurel. [Obs.]

   2. The laurel tree ({Laurus nobilis}). Hence, in the plural,
      an honorary garland or crown bestowed as a prize for
      victory or excellence, anciently made or consisting of
      branches of the laurel.

            The patriot's honors and the poet's bays.
                                                  --Trumbull.

   3. A tract covered with bay trees. [Local, U. S.]

   {Bay leaf}, the leaf of the bay tree ({Laurus nobilis}). It
      has a fragrant odor and an aromatic taste.

Bayberry \Bay"ber*ry\, n. (Bot.)
   (a) The fruit of the bay tree or {Laurus nobilis}.
   (b) A tree of the West Indies related to the myrtle ({Pimenta
       acris}).
   (c) The fruit of {Myrica cerifera} (wax myrtle); the shrub
       itself; -- called also {candleberry tree}.

   {Bayberry tallow}, a fragrant green wax obtained from the
      bayberry or wax myrtle; -- called also {myrtle wax}.

Bay tree \Bay" tree`\
   A species of laurel. ({Laurus nobilis}).

Source : WordNet®

Laurus nobilis
     n : small Mediterranean evergreen tree with small blackish
         berries and glossy aromatic leaves used for flavoring in
         cooking; also used by ancient Greeks to crown victors
         [syn: {true laurel}, {bay}, {bay laurel}, {bay tree}]