two things considered together; a pair

(treated as sing. or pl) two people paired together; esp two people who are married or living together

informal an indefinite small number; a few

in mechanics, two equal and opposite forces that act along parallel lines and cause rotation

to unite or link (one thing) with another

He coupled his praise with a request

to fasten (railway carriages or pieces of equipment) together

to copulate

to come together to form a unit; to join