n.1 a person controlling or administering a business or part of a business.
2 a person controlling the affairs, training, etc. of a person or team in sports, entertainment, etc.
3 Brit. Parl. a member of either House of Parliament appointed with others for some duty in which both Houses are concerned.
4 a person regarded in terms of skill in household or financial or other management (a good manager).
Derivatives:
managerial adj. managerially adv. managership n.