n. 25B6; noun
billows of smoke : CLOUD, mass.
(archaic) the billows that break upon the shore : WAVE, roller, boomer, breaker.
25B6; verb
her dress billowed around her : PUFF UP/OUT, balloon (out), swell, fill (out), belly out.
smoke billowed from the chimney : SWIRL, spiral, roll, undulate, eddy; pour, flow.