- a boxer's trainer and second
- a person who trains and manages a horse, dog, etc. in a show or contest
- a person employed to advise a politician, celebrity, etc. on what to say or do, as in shaping his or her public image
- One that handles or directs something or someone: handlers of food in a restaurant; the candidate's campaign handlers.
- a. One who trains or exhibits an animal, such as a dog.b. One who acts as the trainer or second of a boxer.
- (literally) One who handles something (especially manually) or someone.
- The handler of a weapon gets a symbolic sensation of deadly power.
- (in combination) A controller, trainer, someone who handles a specified thing, animal or person (especially a prizefighter).
- The spy's handler told him to approach the subject by posing as a dog handler.
- (computing) A subroutine that handles a particular situation such as an event or exception.
handle + -er
handler - Computer Definition
A software routine that performs a particular task. It often refers to a routine that "handles" an exception of some kind, such as an error, but it can refer to mainstream processes as well. The term is typically used in operating systems and other system software. For example, the routine that opens, reads, writes and closes a database in a full-blown database management system (DBMS) is commonly separated into a stand-alone runtime module that is inserted into an application. In such cases, a "database handler" is said to be embedded within the app. See DBMS.