mate1
Pronunciation: /meɪt/
noun
- 1the sexual partner of a bird or other animal: a male bird sings to court a mate
- informal a person’s husband, wife, or other sexual partner: he couldn’t satisfy his frisky young mate
- informal one of a matched pair: a sock without its mate
- 3British informal a friend or companion: my best mate Steve
- used as a friendly form of address between men or boys: ‘See you then, mate.’
- 4chiefly British an assistant or deputy in certain trades: a plumber’s mate
- an officer on a merchant ship subordinate to the master. See also first mate.
verb

Origin:
late Middle English: from Middle Low German māt(e) 'comrade', of West Germanic origin; related to meat (the underlying concept being that of eating together)