handler
//ˈhænd.lər//
Noun
handlerSingular
handlersPlural
1
A person who trains and manages animals, especially dogs or horses.
The dog handler trained the puppy for six months.
2
A person who manages, controls, or is responsible for someone or something.
The press handler arranged all the interviews for the celebrity.
3
A person who handles goods, luggage, or materials as part of their job.
The baggage handlers loaded the suitcases onto the plane.
4
In computing, a routine or function that processes specific events or data.
The error handler catches exceptions and logs them to a file.