Meaning

• To wrinkle the brows, as in frowning or displeasure; to put on a frowning look; to look sour, sullen, severe, or angry.

• (by extension) To look gloomy, dark, or threatening; to lower.

• To look at or repel with a scowl or a frown.

  "to scowl a rival into submission"

• To express by a scowl.

  "to scowl defiance"

Meaning

• The act of giving a scowl.