also: ハンドラ
handler (person who handles something, esp. dogs)
Typically refers to a person who trains, manages, or shows animals, especially dogs. Also used for handlers in other contexts like sports or events.
She works as a handler for police dogs.
At dog shows, handlers guide the dogs.
Computing term for a routine that manages a specific event or task, such as an interrupt handler or event handler.
This program has an error handler built in.