What is the meaning of pairing?

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, mating, conjugation, union, sexual union
• The act of grouping things or people in pairs.

verb

• Form a pair or pairs.
  • usage: "The two old friends paired off"
  • synonyms: pair, pair off, partner off, 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
• Occur in pairs.
  • synonyms: pair, geminate
• Arrange in pairs.
  • usage: "Pair these numbers"
  • synonyms: pair, geminate
• Engage in sexual intercourse.
  • usage: "Birds mate in the Spring"
  • synonyms: copulate, mate, pair, couple