handler

[hand-ler]
noun
1.
a person or thing that handles.
2.
Boxing. a person who assists in the training of a fighter or is the fighter's second during a fight.
3.
a person who exhibits a dog in a bench show or field trial.

Origin:
1350–1400; Middle English. See handle, -er1

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To handler
Collins
World English Dictionary
handler (ˈhændlə)
 
n
1.  a person, esp a police officer, in charge of a specially trained dog
2.  a person who handles some specified thing: a baggage handler
3.  a person who holds or incites a dog, gamecock, etc, esp in a race or contest
4.  the trainer or second of a boxer

Handler (ˈhændlə)
 
n
Daniel. born 1970, US writer for older children, best known for the macabre humour of his A Series of Unfortunate Events, a sequence of books written in the persona of Lemony Snicket

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Example sentences
The same thing applies to the duct-work as stated for the air handler.
The beagle would sit next to a suspicious-smelling bag, wag his tail, look
  excited and then look to his handler for praise.
Not everyone who handles food needs a food handler's certificate.
When the dog cannot make a positive decision, he will look to the handler for a
  cue.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature