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)

• nightward
• night-watch
• night-watches
• night-watchman
• night-watchmen
• nightwear
• nightwears
• night-work
• night-worker
• night-workers
• night-works
• nighty
• nig-nog
• nig-nogs
• nigrescence
• nigrescences
• nigrescent
• nigricant
• nigrified
• nigrifies
• nigrify
• nigrifying
• Nigritian
• nigritude
• nigritudes