roommate /ˈruːmˌmeɪt/ (roommates)

• 1.  

  N-COUNT（可数名词） Your roommate is the person you share a room, apartment, or house with, for example when you are in college. 室友 [美国英语]

  例：

  Derek and I are close; we were roommates for two years.

  德里克和我关系密切，我们曾是两年的室友。