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

• resolutive
• resolvabilities
• resolvability
• resolvable
• resolve
• resolved
• resolvedly
• resolvedness
• resolvednesses
• resolvent
• resolvents
• resolver
• resolvers
• resolves
• resolving
• resolving power
• resolving powers
• resonance
• resonance-box
• resonance-boxes
• resonances
• resonant
• resonantly
• resonate
• resonated