- pl. -·ros a member of one of the indigenous peoples of Guam and the Northern Mariana Islands
- the Austronesian language of this people
nounpl. Chamorro, or Cha·mor·ros
- A member of a people of Guam and the Northern Mariana Islands.
- The Austronesian language of the Chamorros.
- Pertaining to the indigenous native islanders of the Mariana Islands consisting of Guam, Saipan, Rota, and Tinian.