Learner's definition of MANAGER
someone who is in charge of a business, department, etc.
see also stage manager
I'd like to speak to the manager, please.
He was promoted to manager last year.
a sales/bank/personnel manager
The team's general manager acquired five new players for the upcoming season.
someone who directs the training and performance of a sports team
a person who directs a baseball team
someone who directs the professional career of an entertainer or athlete
someone who decides how to use something