lituus /litˈū-əs/

1. An augur's curved staff (historical)
2. A J-shaped Roman trumpet (historical)
3. A curve of similar form with the polar equation r² θ = a (mathematics)

• ripraps
• rip-roaring
• rip-roaringly
• rips
• ripsaw
• ripsaws
• ripsnorter
• ripsnorters
• ripsnorting
• ripsnortingly
• Ripstone pippin
• ripstop
• ript
• riptide
• riptides
• Ripuarian
• Rip Van Winkle
• risaldar
• risaldars
• RISC
• rise
• rise above
• rise and shine
• rise from the ranks
• risen