Billow (verb)

1. To swell out in waves or billows.
2. To rise and fall in large, sweeping movements.
3. To appear to roll or surge forward.

Origin:

From middle english bilwen, biluen, from old english bylwan, from proto-germanic *bylwōną ("to swell"), from proto-indo-european *bhel- ("to blow, inflate").

Examples:

1. The waves billowed against the shore.
2. The smoke billowed from the chimney.
3. The flag billowed in the wind.
4. The curtains billowed in the breeze.
5. The clouds billowed across the sky.