1. covering a surface with gravel
Usage: present participle of gravel
2. puzzling or perplexing someone greatly
Usage: informal

Examples

• The workers are gravelling the driveway this morning.
• They spent the weekend gravelling the garden path.
• The complex math problem was gravelling the students.
• Her mysterious behavior kept gravelling her friends.
• The contractor finished gravelling the parking area.
• That riddle has been gravelling me all day.