han ‧ dler /ˈhændlə $ -ər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ handle , ↑ handler , ↑ handling ; verb : ↑ handle ]
1 . someone who trains an animal, especially a dog:
a police dog handler
2 . someone who touches, carries, or moves things as their job:
All food handlers should be properly trained.
baggage handlers at the airport
3 . someone who helps and advises an important person:
She is kept well away from the press by her handlers.