also: めいと
She is a classmate from my high school days.
I quickly became friends with my new roommate.
navigation officer; mate
Maritime use of 'mate' for a ship's officer; in Japanese it is likely to appear in specialized compounds such as チーフメート or ファーストメート rather than as an everyday standalone word.
The chief mate took over the navigation watch.
chief mate; first mate
Common katakana spelling for English-like 'mate', especially in compounds such as クラスメイト, チームメイト, and ルームメイト.
Attested katakana variant; especially plausible in maritime compounds such as チーフメート or ファーストメート.
Katakana loanword corresponding to English 'mate'. No borrowing history beyond the loanword form is specified.