What is the meaning of mating?

noun

• The act of pairing a male and female for reproductive purposes.
  • usage: "the casual couplings of adolescents"; "the mating of some species occurs only in the spring"
  • synonyms: coupling, pairing, conjugation, union, sexual union

verb

• Engage in sexual intercourse.
  • usage: "Birds mate in the Spring"
  • synonyms: copulate, mate, pair, couple
• Bring two objects, ideas, or people together.
  • usage: "This fact is coupled to the other one"; "Matchmaker, can you match my daughter with a nice young man"; "The student was paired with a partner for collaboration on the project"
  • synonyms: match, mate, couple, pair, twin
• Place an opponent's king under an attack from which it cannot escape and thus ending the game.
  • usage: "Kasparov checkmated his opponent after only a few moves"
  • synonyms: checkmate, mate