1) American rock music group 2) Cohabitant 3) Dorm assignment 4) Dorm companion 5) Dorm member 6) Dorm partner 7) Dormitory companion 8) Dormitory option 9) Felix, to oscar 10) Friend 11) Joint letter 12) Lease co-signer 13) One who may be sexiled 14) Oscar, to felix 15) School buddy 16) School pal 1) Coresident 2) Cotenant 3) Pet 
A roommate is a person who shares a living facility such as an apartment or dormitory. Similar terms include suitemate, housemate, flatmate (`flat`: the usual term in British English for an apartment - in New Zealand, `flatmate` is solely used, regardless of whether the dwelling is an apartment or a detached house), or sharemate (shared living...
• (n.) One of twe or more occupying the same room or rooms; one who shares the occupancy of a room or rooms; a chum.
Room'mate` noun One of twe or more occupying the same room or rooms; one who shares the occupancy of a room or rooms; a chum. 
[n] - an associate who shares a room with you
roomie noun an associate who shares a room with you