pair
noun(pair)
a set of two similar things considered as a unit
pair
verb(pair)
arrange in pairs
pair
noun(pair)
two items of the same kind
Synonyms: brace, 
couple, 
couplet, 
distich, 
duad, 
duet, 
duo, 
dyad, 
span, 
twain, 
twosome, 
yoke, 
 pair
verb(pair)
form a pair or pairs
Synonyms: couple, pair off, partner off, 
 Examples:
The two old friends paired off. 
pair
verb(pair)
engage in sexual intercourse
pair
verb(pair)
occur in pairs
pair
verb(pair)
bring two objects, ideas, or people together
Examples:
The student was paired with a partner for collaboration on the project. 
pair
noun(pair)
a poker hand with 2 cards of the same value
pair
noun(pair)
two people considered as a unit