Definitions
1.nounTwo similar or identical things taken together; often followed by of."I couldn't decide which of the pair of designer shirts I preferred, so I bought the pair."
2.nounTwo people in a relationship, partnership or friendship."Spouses should make a great pair."
3.nounUsed with binary nouns (often in the plural to indicate multiple instances, since such nouns are plural only, except in some technical contexts)"a pair of scissors; two pairs of spectacles; several pairs of jeans"
4.nounA couple of working animals attached to work together, as by a yoke."A pair is harder to drive than two mounts with separate riders."
5.nounA poker hand that contains two cards of identical rank, which cannot also count as a better hand.
6.nounA score of zero runs (a duck) in both innings of a two-innings match.
7.nounA double play, two outs recorded in one play."They turned a pair to end the fifth."
8.nounA doubleheader, two games played on the same day between the same teams"The Pirates took a pair from the Phillies."
9.nounA boat for two sweep rowers.
10.nounA pair of breasts"She's got a gorgeous pair."
11.nounThe exclusion of one member of a parliamentary party from a vote, if a member of the other party is absent for important personal reasons.
12.nounTwo 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."There were two pairs on the final vote."
13.nounA number of things resembling one another, or belonging together; a set.
14.noun(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.
15.verbTo group into one or more sets of two."The wedding guests were paired boy/girl and groom's party/bride's party."
16.verbTo bring two (animals, notably dogs) together for mating.
17.verbTo engage (oneself) with another of opposite opinions not to vote on a particular question or class of questions.
18.verbTo suit; to fit, as a counterpart.