I. verb Etymology: Middle English skoulen, probably of Scandinavian origin; akin to Danish skule to scowl Date: 14th century intransitive verb to contract the brow in an expression of displeasure, to exhibit a threatening aspect, transitive verb to express with a scowl, scowler noun scowlingly adverb
II. noun Date: circa 1520 a facial expression of displeasure ; frown
