A controller, trainer, someone who handles a specified thing, animal or person (especially a prizefighter).
One who handles something (especially manually) or someone.
An advisor or manager to a person occupying a position or office to which the speaker believes the holder does not possess the typical qualifications and/or experience.
A subroutine that handles a particular situation such as an event or exception.
A person who trains another; a coach.
A person responsible for treating injuries sustained by players during matches; a physiotherapist.
A patch for a video game that applies cheats.
A running shoe or sneaker.
A piece of indoor equipment allowing a bicycle to be ridden while stationary.