1. to look angry, sullen, or threatening; to frown or scowl
Usage: third person singular present tense of 'lour'
2. (of the sky or weather) to look dark, gloomy, or threatening
Usage: third person singular present tense of 'lour'; often used with sky or clouds as subject

Examples

• He lours at the camera with obvious displeasure.
• The sky lours overhead, suggesting a storm is coming.
• She lours whenever someone mentions his name.
• Dark clouds lour on the horizon.
• The coach lours at the team after their poor performance.
• His expression lours as he reads the bad news.