Source : Webster's Revised Unabridged Dictionary (1913)

Bray \Bray\, v. t. [imp. & p. p. {Brayed}; p. pr. & vb. n.
   {Braying}.] [OE. brayen, OF. breier, F. broyer to pound,
   grind, fr. OHG. brehhan to break. See {Break}.]
   To pound, beat, rub, or grind small or fine.

         Though thou shouldest bray a fool in a mortar, . . .
         yet will not his foolishness depart from him. --Prov.
                                                  xxvii. 22.

Bray \Bray\, v. i. [OE brayen, F. braire to bray, OF. braire to
   cry, fr. LL. bragire to whinny; perh. fr. the Celtic and akin
   to E. break; or perh. of imitative origin.]
   1. To utter a loud, harsh cry, as an ass.

            Laugh, and they Return it louder than an ass can
            bray.                                 --Dryden.

   2. To make a harsh, grating, or discordant noise.

            Heard ye the din of battle bray?      --Gray.

Bray \Bray\, v. t.
   To make or utter with a loud, discordant, or harsh and
   grating sound.

         Arms on armor clashing, brayed Horrible discord.
                                                  --MIlton.

         And varying notes the war pipes brayed.  --Sir W.
                                                  Scott.

Bray \Bray\, n.
   The harsh cry of an ass; also, any harsh, grating, or
   discordant sound.

         The bray and roar of multitudinous London. --Jerrold.

Bray \Bray\, n. [OE. braye, brey, brew, eyebrow, brow of a hill,
   hill, bank, Scot. bra, brae, bray, fr. AS. br?w eyebrow,
   influenced by the allied Icel. br? eyebrow, bank, also akin
   to AS. br? yebrow. See {Brow}.]
   A bank; the slope of a hill; a hill. See {Brae}, which is now
   the usual spelling. [North of Eng. & Scot.] --Fairfax.

Source : WordNet®

bray
     n : the cry of an ass
     v 1: braying characteristic of donkeys [syn: {hee-haw}]
     2: reduce to small pieces or particles by pounding or abrading;
        "grind the spices in a mortar"; "mash the garlic" [syn: {grind},
         {mash}, {crunch}, {comminute}]
     3: laugh loudly and harshly