NauruNa‧u‧ru /nɑːˈuːruː, naʊˈruː/ 
an independent republic, one of the smallest nations in the world, on an island in the southwest Pacific Ocean near the Equator. It is known for its phosphate mines. Population: 9,434 (2014). Capital: Yaren.—Nauruan noun, adjective
an independent republic, one of the smallest nations in the world, on an island in the southwest Pacific Ocean near the Equator. It is known for its phosphate mines. Population: 9,434 (2014). Capital: Yaren.—Nauruan noun, adjective- on-board
- once
- Once in Royal David's City
- once-over
- oncologist
- oncology
- oncoming
- Ondaatje, Michael
- one
- O'Neal, Shaquille
- one another
- one-armed bandit
- one-dimensional
- One Flew Over the Cuckoo's Nest
- one-horse
- One Hundred and One Dalmatians
- O'Neill, Eugene
- one-liner
- one-man
- one-man band
- One Nation Party
- oneness
- one-night stand
- one-off
- one-on-one