WordNet (r) 3.0 (2006):

sound wave
    n 1: (acoustics) a wave that transmits sound [syn: sound wave,
         acoustic wave]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "sound wave":
   amplitude, antinode, auditory effect, auditory phenomenon, crest,
   de Broglie wave, diffraction, electromagnetic radiation,
   electromagnetic wave, frequency, frequency band,
   frequency spectrum, guided wave, in phase, interference, light,
   longitudinal wave, loudness, mechanical wave, node, noise,
   out of phase, period, periodic wave, phone, radio wave, ray,
   reinforcement, resonance, resonance frequency, seismic wave,
   shock wave, sonance, sound, sound intensity level,
   sound propagation, speech sound, surface wave, tidal wave,
   transverse wave, trough, ultrasound, wave, wave equation,
   wave motion, wave number, wavelength