1. cleaned or scrubbed something thoroughly and vigorously
Usage: past tense of scour
2. searched through an area thoroughly and systematically
Usage: past tense of scour
3. wore away or eroded something by the action of water or wind
Usage: past tense of scour; geological

Examples

• She scoured the dirty pots and pans until they gleamed.
• The police scoured the neighborhood looking for clues.
• We scoured the internet for the best deals on flights.
• The river scoured deep channels through the rock over centuries.
• He scoured the old bathtub with bleach and steel wool.
• Detectives scoured the crime scene for evidence.
• The wind and rain scoured the hillside bare of vegetation.