Billow - Definition

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]