Billow

billow
    n 1: a large sea wave [syn: {billow}, {surge}]
    v 1: rise up as if in waves; "smoke billowed up into the sky"
         [syn: {billow}, {wallow}]
    2: move with great difficulty; "The soldiers billowed across the
       muddy riverbed"
    3: rise and move, as in waves or billows; "The army surged
       forward" [syn: {billow}, {surge}, {heave}]
    4: become inflated; "The sails ballooned" [syn: {balloon},
       {inflate}, {billow}]
    

Billow \Bil"low\, n. [Cf. Icel. bylgja billow, Dan. b["o]lge,
   Sw. b["o]lja; akin to MHG. bulge billow, bag, and to E.
   bulge. See {Bulge}.]
   1. A great wave or surge of the sea or other water, caused
      usually by violent wind.
      [1913 Webster]

            Whom the winds waft where'er the billows roll.
                                                  --Cowper.
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   2. A great wave or flood of anything. --Milton.
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Billow \Bil"low\, v. i. [imp. & p. p. {Billowed}; p. pr. & vb.
   n. {Billowing}.]
   To surge; to rise and roll in waves or surges; to undulate.
   "The billowing snow." --Prior.
   [1913 Webster]
    

67 Moby Thesaurus words for "billow":
      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