pair

Definitions

• Two similar or identical things taken together; often followed by of.
• Two people in a relationship, partnership or friendship.
• Used with binary nouns (often in the plural to indicate multiple instances, since such nouns are plural only, except in some technical contexts)
• A couple of working animals attached to work together, as by a yoke.
• (cards) A poker hand that contains two cards of identical rank, which cannot also count as a better hand.
• (cricket) A score of zero runs (a duck) in both innings of a two-innings match.
• (baseball) A double play, two outs recorded in one play.
• (baseball) A doubleheader, two games played on the same day between the same teams
• (rowing) A boat for two sweep rowers.
• (slang) A pair of breasts
• (Australia) The exclusion of one member of a parliamentary party from a vote, if a member of the other party is absent for important personal reasons.
• Two members of opposite parties or opinion, as in a parliamentary body, who mutually agree not to vote on a given question, or on issues of a party nature during a specified time.
• (archaic) A number of things resembling one another, or belonging together; a set.
• (kinematics) In a mechanism, two elements, or bodies, which are so applied to each other as to mutually constrain relative motion; named in accordance with the motion it permits, as in turning pair, sliding pair, twisting pair.