Definition of

Pair

  1. (noun, group) a poker hand with 2 cards of the same value
  2. (noun, group) two people considered as a unit
  3. (noun, group) a set of two similar things considered as a unit
  4. (noun, quantity) two items of the same kind
  5. (verb, contact) bring two objects, ideas, or people together
    Matchmaker, can you match my daughter with a nice young man?
    The student was paired with a partner for collaboration on the project
  6. (verb, contact) engage in sexual intercourse
  7. (verb, contact) arrange in pairs
  8. (verb, contact) occur in pairs
  9. (verb, social) form a pair or pairs

via WordNet, Princeton University

Origin of the word Pair

  1. late 13c., "two of a kind, coupled in use," from O.Fr. paire, from L. paria "equals," neut. pl. of par (gen. paris) "a pair, counterpart, equal," noun use of par (adj.) "equal," of unknown origin, perhaps connected with *per-, PIE root meaning "to sell, buy" (on notion of "give equal value for"), which would connect it with L. pretiu… more

via Online Etymology Dictionary, ©2001 Douglas Harper

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