(in Māori contexts) an island

who needs a Greek island when you've got this grape-covered motu glimmering in the Hauraki Gulf?

a member of a Melanesian people of Papua New Guinea inhabiting the area around Port Moresby

the language of the Motu, the base of a pidgin known as Hiri Motu or (formerly) Police Motu, widely used as a lingua franca for administrative purposes