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

• aniseed
• aniseed ball
• aniseed balls
• aniseeds
• anises
• anisette
• anisettes
• aniso-
• anisocercal
• anisodactylous
• anisogamies
• anisogamy
• anisomerous
• anisophyllous
• anisotropic
• anisotropically
• anisotropies
• anisotropy
• anker
• ankerite
• ankerites
• ankers
• ankh
• ankhs
• ankle