couple

a pair who associate with one another; "the engaged couple"; "an inseparable twosome"

a pair of people who live together; "a married couple from Chicago"

a small indefinite number; "he's coming for a couple of days"

two items of the same kind

(physics) something joined by two equal and opposite forces that act along parallel lines

bring two objects, ideas, or people together; "This fact is coupled to the other one"; "Matchmaker, can you match my daughter with a nice young man?"; "The student was paired with a partner for collaboration on the project"

link together; "can we couple these proposals?"

form a pair or pairs; "The two old friends paired off"

engage in sexual intercourse; "Birds mate in the Spring"