billow

(noun) a large sea wave. Synonyms: surge.

(verb) rise up as if in waves. Synonyms: wallow. Example: "Smoke billowed up into the sky."

(verb) move with great difficulty. Example: "The soldiers billowed across the muddy riverbed."

(verb) rise and move, as in waves or billows. Synonyms: surge, heave. Example: "The army surged forward."

(verb) become inflated. Synonyms: balloon, inflate. Example: "The sails ballooned."