mate
/meɪt/
A fellow, comrade, colleague, partner or someone with whom something is shared, e.g. shipmate, classmate.
(especially of a non-human animal) A breeding partner.
A friend, usually of the same sex.
He's my best mate.
Friendly term of address to a stranger, usually male, of similar age
Excuse me, mate, have you got the time?
In naval ranks, a non-commissioned officer or his subordinate (e.g. Boatswain's Mate, Gunner's Mate, Sailmaker's Mate, etc).
A ship's officer, subordinate to the master on a commercial ship.
A first mate.
A technical assistant in certain trades (e.g. gasfitter's mate, plumber's mate); sometimes an apprentice.
The other member of a matched pair of objects.
I found one of the socks I wanted to wear, but I couldn't find its mate.
A suitable companion; a match; an equal.