quahog /kwöˈhog or kwə-hogˈ/, quahaug /-hög or -högˈ/, or sometimes cohog /kōˈhog or kə-hogˈ/

1. An edible clam (Venus mercenaria) of the N American Atlantic coast, also known as round clam
2. Another variety of clam, Cyprina islandica, also known as black quahog

• nitrous anhydride
• nitrous bacteria
• nitrous oxide
• nitrox
• nitroxyl
• nitroxyls
• nitry
• nitryl
• nitryls
• nits
• nittier
• nittiest
• nitty
• nitty-gritty
• nitwit
• nitwits
• nitwitted
• nitwittedness
• nitwittednesses
• nitwitteries
• nitwittery
• nival
• nivation
• niveous
• Nivôse