verb

1. To put the king of an opponent into checkmate.

   “That jerk checkmated me in four moves!”

2. (by extension) To place in a losing situation that has no escape.

verb

1. To match, fit together without space between.

   “The pieces of the puzzle mate perfectly.”

2. To copulate.

3. To pair in order to raise offspring

Synonyms: couple, match, pair

verb

1. To confuse; to confound.

noun

1. Pairing of organisms for copulation.

2. Sexual union; copulation.

Synonyms: pairing

adjective

1. Fitting into or onto a corresponding part, as a matched plug and socket.