Scowl v. i. [imp. & p. p. Scowled p. pr. & vb. n. Scowling.]
1. To wrinkle the brows, as in frowning or displeasure; to put on a frowning look; to look sour, sullen, severe, or angry.
She scowled and frowned with froward countenance. --Spenser.
2. Hence, to look gloomy, dark, or threatening; to lower. “The scowling heavens.”
scowling
adj : sullen or unfriendly in appearance [syn: beetle-browed]