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

• storm troopers
• storm troops
• storm trysail
• storm trysails
• storm warning
• storm warnings
• storm window
• storm windows
• stormy
• stormy petrel
• stormy petrels
• stornelli
• stornello
• Storthing
• Storting
• story
• storyboard
• storyboards
• storybook
• storybooks
• storyette
• storyettes
• storying
• storyings
• storyline