(chess) Clipping of checkmate.

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.

Friendly; having a friendship (with).

plural of mate

Third-person singular simple present indicative form of mate

(Britain, informal) A supposed surname for a friendless person.

A surname.

Used to form nouns having the sense of "a comrade or fellow with whom what is denoted by the noun is shared".

(zoology) The time of the year during which members of a certain species of animal tend to mate.

(psychology, genetics) Between males and females of a species, the mutual attraction or selection, for reproductive purposes, of individuals with similar characteristics.