two identical, similar, or corresponding things that are matched for use together: a pair of gloves; a pair of earrings.
something consisting of or regarded as having two parts or pieces joined together: a pair of scissors; a pair of slacks.
two individuals who are similar or in some way associated: a pair of liars; a pair of seal pups.
a married, engaged, or dating couple.
two mated animals.
a span or team: a pair of horses.
Government.
two members on opposite sides in a deliberative body who for convenience, as to permit absence, arrange together to forgo voting on a given occasion.
the arrangement thus made.
Cards.
two playing cards of the same denomination without regard to suit or color.
pairs, two card players who are matched together against different contestants.
pairs, pair skating.
Also called kinematic pair. Mechanics. two parts or pieces so connected that they mutually constrain relative motion.