billow

1 :  to rise or roll in waves or surges the billowing sea

2 :  to bulge or swell out (as through action of the wind) billowing clouds … the flags … billowed out in pride … — G. B. Oxnam

:  to cause to billow a field of burning grass billowing thick black clouds of smoke into the sky — Donald Windham

1 :  a large wave … the billows rose and fell unbroken. — Robert Louis Stevenson, Treasure Island

2 :  a moving cloud or mass (as of smoke or flame)

1 :  to rise or roll in large waves the billowing ocean

2 :  to move as a large cloud or mass Smoke billowed from the chimney.

3 :  to bulge or swell out Sails billowed in the breeze.