[1] : The Collaborative International Dictionary of English v.0.48

sound \sound\, n. oe. soun, of. son, sun, f. son, fr. l. sonus
   akin to skr. svana sound, svan to sound, and perh. to e.
   swan. cf. assonant, consonant, person, sonata,
   sonnet, sonorous, swan.
   1. the peceived object occasioned by the impulse or vibration
      of a material substance affecting the ear; a sensation or
      perception of the mind received through the ear, and
      produced by the impulse or vibration of the air or other
      medium with which the ear is in contact; the effect of an
      impression made on the organs of hearing by an impulse or
      vibration of the air caused by a collision of bodies, or
      by other means; noise; report; as, the sound of a drum;
      the sound of the human voice; a horrid sound; a charming
      sound; a sharp, high, or shrill sound.
      1913 webster

            the warlike sound
            of trumpets loud and clarions.        --milton.
      1913 webster

   2. the occasion of sound; the impulse or vibration which
      would occasion sound to a percipient if present with
      unimpaired; hence, the theory of vibrations in elastic
      media such cause sound; as, a treatise on sound.
      1913 webster

   note: in this sense, sounds are spoken of as audible and
         inaudible.
         1913 webster

   3. noise without signification; empty noise; noise and
      nothing else.
      1913 webster

            sense and not sound . . . must be the principle.
                                                  --locke.
      1913 webster

   sound boarding, boards for holding pugging, placed in
      partitions of under floors in order to deaden sounds.

   sound bow, in a series of transverse sections of a bell,
      that segment against which the clapper strikes, being the
      part which is most efficacious in producing the sound. see
      illust. of bell.

   sound post. mus. see sounding post, under sounding.
      1913 webster
see also:
assonant consonant person sonata sonnet sonorous 
swan sound boarding sound bow bell sound post 
sounding post sounding 

[2] : WordNet (r) 2.0

sound bow
     n : contact the part of a bell against which the clapper
         strikes

Bow >> B Words
Bow, definition of term: Bow
bow_pag1.html

Bow Window >> B Words
Bow Window, definition of term: Bow Window
bow+window_pag1.html

Bow Down >> B Words
Bow Down, definition of term: Bow Down
bow+down_pag1.html

Bow Hand >> B Words
Bow Hand, definition of term: Bow Hand
bow+hand_pag1.html