Billowy

['bɪləʊɪ] or ['bɪloi]

(adj.) characterized by great swelling waves or surges; 'billowy storm clouds'; 'the restless billowing sea'; 'surging waves' .

Checked by Calvin--From WordNet

(a.) Of or pertaining to billows; swelling or swollen into large waves; full of billows or surges; resembling billows.

Editor: Lou

Editor: Lou