(1):
(a.) A male and female associated together; esp., a man and woman who are married or betrothed.
(2):
(a.) That which joins or links two things together; a bond or tie; a coupler.
(3):
(a.) Two of the same kind connected or considered together; a pair; a brace.
(4):
(a.) See Couple-close.
(5):
(a.) One of the pairs of plates of two metals which compose a voltaic battery; - called a voltaic couple or galvanic couple.
(6):
(a.) Two rotations, movements, etc., which are equal in amount but opposite in direction, and acting along parallel lines or around parallel axes.
(7):
(v.) To join in wedlock; to marry.
(8):
(v.) To link or tie, as one thing to another; to connect or fasten together; to join.
(9):
(v. i.) To come together as male and female; to copulate.