What does "scowl" mean?

Scowl: Hence, to look gloomy, dark, or threatening; to lower. "The scowling heavens." Thomson.

Additional senses

  1. 2.To look at or repel with a scowl or a frown. Milton.
  2. 3.To express by a scowl; as, to scowl defiance.
  3. 4.The wrinkling of the brows or face in frowing; the expression of displeasure, sullennes, or discontent in the countenance; an angry frown. With solemn phiz, and critic scowl. Lloyd.
  4. 5.Hence, gloom; dark or threatening aspect. Burns. A ruddy storm, whose scowl Made heaven's radiant face look foul. Crashaw.

Sources