adjective. ['ˈbɪloʊɪŋ'] characterized by great swelling waves or surges.
1. Noun, singular or mass They inject shape into ensembles by exaggerating a slim waist and contrasting it with billowing, bubbly bottoms. 2. Verb, gerund or present participle When the magician pours hot water over dry ice, the result is a billowing cloud of steam. 3. Adjective Under the tunic, women wear billowing pants or a long skirt.