Ruffle  —v. (-ling) 1 a disturb the smoothness or tranquillity of. B undergo this. 2 gather (lace etc.) Into a ruffle. 3 (often foll. By up) (of a bird) erect (its feathers) in anger, display, etc. —n. Frill of lace etc., esp. Round the wrist or neck. [origin unknown]