1. [n]  an ornamental caparison for a horse
2. [n]  a lyric poet
3. [v]  put a caparison on; of horses

BARD is a 4 letter word that starts with B.

1. \Bard\, n. [Of Celtic origin; cf. W. bardd, Arm. barz, Ir.
   & Gael. bard, and F. barde.]
   1. A professional poet and singer, as among the ancient
      Celts, whose occupation was to compose and sing verses in
      honor of the heroic achievements of princes and brave men.
   2. Hence: A poet; as, the bard of Avon.
   

2. \Bard\, Barde \Barde\, n. [F. barde, of doubtful origin.]
   1. A piece of defensive (or, sometimes, ornamental) armor for
      a horse's neck, breast, and flanks; a barb. [Often in the
      pl.]
   2. pl. Defensive armor formerly worn by a man at arms.
   3. (Cookery) A thin slice of fat bacon used to cover any meat
      or game.
   

3. \Bard\, v. t. (Cookery)
   To cover (meat or game) with a thin slice of fat bacon.
   

4. \Bard\, n. [Akin to Dan. & Sw. bark, Icel. b["o]rkr, LG. &
   HG. borke.]
   1. The exterior covering of the trunk and branches of a tree;
      the rind.
   2. Specifically, Peruvian bark.
   {Bark bed}. See {Bark stove} (below).
   {Bark pit}, a pit filled with bark and water, in which hides
      are steeped in tanning.
   {Bark stove} (Hort.), a glazed structure for keeping tropical
      plants, having a bed of tanner's bark (called a bark bed)
      or other fermentable matter which produces a moist heat.