rip-rap or riprap /ripˈrap/

1. Loose broken stones, used to form a foundation on soft ground or under water, or in the construction of revetments and embankments
2. A foundation formed of these

• clears
• clear-sighted
• clear-sightedly
• clear-sightedness
• clearskin
• clear-starcher
• clear-starchers
• clear-starching
• clearstories
• clearstory
• clear the air
• clear the decks
• clear the way
• clear up
• clear-up
• clearway
• clearways
• clearwing
• clearwings
• cleat
• cleated
• cleating
• cleats
• cleavable
• cleavableness