second

noun

To follow up; supplement.

To support; aid; forward; promote; back, or back up; specifically, to assist in a duel.

In music, to sing second to.

In legislative and deliberative bodies, public meetings, etc., formally to express approval and support of (a motion, amendment, or proposal), as a preliminary to further discussion or to formal adoption.

In the British Royal Artillery and Royal Engineers, to put into temporary retirement, as an officer when he accepts civil employment under the crown.