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

• palm-kernel
• palm-kernel oil
• palm-kernels
• palm oil
• palm-oil
• palm oils
• palm-play
• palms
• palm sugar
• Palm Sunday
• palmtop
• palmtops
• palm tree
• palm-tree justice
• palm trees
• palm wine
• palmy
• palmyra
• palmyra nuts
• palmyras
• palmyra wood
• palolo
• palolos
• palolo worm
• palomino