To be consistent as part of a group, or by common purpose.
To stick together physically, by adhesion.
To join (two things) together, or (one thing) to (another).
To cause (two animals) to copulate, to bring (two animals) together for mating.
To join in sexual intercourse; to copulate.
Two or (a) small number of.
Two or a few, a small number of.
A small number.
That which joins or links two things together; a bond or tie; a coupler.
A couple-close.
Two partners in a romantic or sexual relationship.
One of the pairs of plates of two metals which compose a voltaic battery, called a voltaic couple or galvanic couple.
Two of the same kind connected or considered together.
A turning effect created by forces that sum to zero in magnitude but produce a non-zero external torque.