I. ˈskau̇(-ə)l verb
Etymology: Middle English skoulen, probably of Scandinavian origin; akin to Danish skule to scowl
Date: 14th century
intransitive verb
1. : to contract the brow in an expression of displeasure
2. : to exhibit a threatening aspect
transitive verb
: to express with a scowl
• scowl·er noun
• scowl·ing·ly ˈskau̇-liŋ-lē adverb
II. noun
Date: circa 1520
: a facial expression of displeasure : frown