Definitions
1.verbTo wrinkle the brows, as in frowning or displeasure; to put on a frowning look; to look sour, sullen, severe, or angry.
2.verb(by extension) To look gloomy, dark, or threatening; to lower.
3.verbTo look at or repel with a scowl or a frown."to scowl a rival into submission"
4.verbTo express by a scowl."to scowl defiance"