a. A group of assistants to a manager, executive, or other person in authority.
b. A group of military officers assigned to assist a commanding officer in an executive or advisory capacity.
c. The personnel who carry out a specific enterprise: the nursing staff of a hospital.
Something that serves as a staple or support.
Music A set of horizontal lines and intermediate spaces used in notation to represent a sequence of pitches, in modern notation normally consisting of five lines and four spaces. Also called stave.