Definition of "Pair" :
noun: a poker hand with 2 cards of the same value
noun: two people considered as a unit
noun: a set of two similar things considered as a unit
noun: two items of the same kind
verb: bring two objects, ideas, or people together
"The student was paired with a partner for collaboration on the project."
verb: engage in sexual intercourse
verb: arrange in pairs
"Pair these numbers."
verb: occur in pairs
verb: form a pair or pairs
"The two old friends paired off."