mated

/ˈmeɪtɪd/
adjective
  1. Joined together as a pair, especially for breeding or reproduction.
    • Only mated females will lay eggs.
    • The zoo keeps mated pairs of pandas together.
    • The mated pair of swans built a nest by the lake.
  2. Fitted or connected together as a matching set.
    • He found the mated glove in the lost and found.
    • The mated pieces of the machine worked smoothly.
    • The mated connectors snapped into place.