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

• sweetheart agreements
• sweetheart contract
• sweetheart contracts
• swimmer
• swimmeret
• swimmerets
• swimmers
• swimmier
• swimmiest
• swimming
• swimming-bath
• swimming-baths
• swimming-bell
• swimming-bells
• swimming costume
• swimming costumes
• swimming hole
• swimming holes
• swimmingly
• swimmingness
• swimmingnesses
• swimming-pond
• swimming-ponds
• swimming-pool
• swimming-pools