Billow

Noun

 * 1) A large wave, swell, surge, or undulating mass of water, smoke or sound

Verb

 * 1) To surge or roll in billows
 * 2) To swell out or bulge

Verbs for Billow
bear on—; beset by—; cleave—; produce—; steer through—; swell into —s; swim through—; —beats; —breaks; —crests; — dances; —endangers; —foams; —over¬whelms; —rages; —rears up; —roars; — rolls; —silvers; —surges; —sweeps on; — swells; —tosses up; —tumbles.

Adverbs for Billow
softly; tumblingly; restlessly; dashingly; furiously; advancingly; foamingly; wrathfully; seethingly; multitudinously; glitteringly; darkly; crestedly.

Thesaurus
bag, balloon, be poised, belly, belly out, bilge, bore, bouge, break, breakers, bug, bulge, chop, choppiness, chopping sea, comb, comber, crash, dash, dilate, dirty water, distend, eagre, ebb and flow, goggle, gravity wave, ground swell, heave, heavy sea, heavy swell, lift, lop, peak, pooch, pop, popple, pouch, pout, riffle, ripple, rise, rise and fall, roll, roller, rough water, round out, scend, sea, send, smash, surf, surge, swell, swell out, tidal bore, tidal wave, tide wave, toss, trough, tsunami, undulate, undulation, water wave, wave, wavelet, white horses, whitecaps

Etymology
From bylgja:, from. Cognates include Danish bølge:, Middle High German bulga: and Low German bulge:.