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.
A poker hand that contains two cards of identical rank, which cannot also count as a better hand.
A score of zero runs (a duck) in both innings of a two-innings match.
A double play, two outs recorded in one play.
A doubleheader, two games played on the same day between the same teams
A boat for two sweep rowers.
A pair of breasts
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.
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.
To group into one or more sets of two.
To bring two (animals, notably dogs) together for mating.
To engage (oneself) with another of opposite opinions not to vote on a particular question or class of questions.
To suit; to fit, as a counterpart.
To impair, to make worse.
To become worse, to deteriorate.