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

• skellum
• skellums
• skelly
• skelly-eyed
• skellying
• skelm
• skelms
• skelp
• skelped
• skelping
• skelpings
• skelps
• skelter
• skeltered
• skeltering
• skelters
• skelum
• skelums
• skene
• skene-dhu
• skene-occle
• skenes
• skeo
• skeos
• skep