| Noun | 1. | billow - a large sea wavemoving ridge, wave - one of a series of ridges that moves across the surface of a liquid (especially across a large body of water) | |
| Verb | 1. | billow - rise up as if in waves; "smoke billowed up nto the sky"cloud - billow up in the form of a cloud; "The smoke clouded above the houses" | |
| 2. | billow - move with great difficulty; "The soldiers billowed across the muddy riverbed"go, locomote, move, travel - change location; move, travel, or proceed; "How fast does your new car go?"; "We travelled from Rome to Naples by bus"; "The policemen went from door to door looking for the suspect"; "The soldiers moved towards the city in an attempt to take it before night fell" | |
| 3. | billow - rise and move, as in waves or billows; "The army surged forward" | |
| 4. | billow - become inflated; "The sails ballooned"expand - become larger in size or volume or quantity; "his business expanded rapidly" | |