gravel noun definition in In the garden topic from the Oxford Advanced Learner's Dictionary

gravel

 noun: In the garden topic
small stones, often used to make the surface of paths and roads a gravel path A gravel drive led up to the house. a gravel pit (= a place where gravel is taken from the ground) Put a layer of fine gravel into the bottom of the plant pot for drainage. We parked on the gravel at the side of the road.