[adj] characterized by great swelling waves or surges; "billowy storm clouds"; "the restless billowing sea"; "surging waves"
billowing(a), stormy, surging
bagging, baggy, ballooning, bellying, bent, billowing, bloated, bosomy, bulbose, bulbous, bulging, bumped, bumpy, bunched, bunchy, curvaceous, curvate, curvated, curve, curved, curvesome, curviform, curvilineal, curvilinear, curving, curvy, distended, geo