pair pair /ˈpɛr/

noun

1. () A set of two similar things considered as a unit  ( brace , pair )
   a set of two similar things considered as a unit
     They bought a pair of tickets to the concert.
   They bought a pair of tickets to the concert.
   
2. () Two items of the same kind  ( brace , couplet , distich , duad , duet , duo , dyad , span , twain , couple , pair , twosome , yoke )
   two items of the same kind
   
3. () Two people considered as a unit  ( pair )
   two people considered as a unit
   
4. A poker hand with 2 cards of the same value  ( pair )
   a poker hand with 2 cards of the same value
   

verb

1. () Form a pair or pairs  ( pair off , partner off , couple , pair )
   form a pair or pairs
    The two old friends paired off
   The two old friends paired off
   
2. () Bring two objects, ideas, or people together  ( twin , mate , pair , couple , match )
   bring two objects, ideas, or people together
    This fact is coupled to the other one
   This fact is coupled to the other one
    Matchmaker, can you match my daughter with a nice young man?
   Matchmaker, can you match my daughter with a nice young man?
    The student was paired with a partner for collaboration on the project
   The student was paired with a partner for collaboration on the project
   
3. Engage in sexual intercourse  ( copulate , couple , pair , mate )
   engage in sexual intercourse
    Birds mate in the Spring
   Birds mate in the Spring
   
4. Arrange in pairs  ( geminate , pair )
   arrange in pairs
    Pair these numbers
   Pair these numbers
   
5. Occur in pairs  ( geminate , pair )
   occur in pairs