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best boy

American

noun

Movie and Television Slang.

the first assistant to the head electrician.

best boy British

noun

the assistant to the senior electrician or to the key grip in a film crew

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It’s telling that while Mr. Deakins takes pains to praise his longtime gaffer, key grip, dolly grip, best boy and more, he never bothers to define those roles for the lay reader.

From The Wall Street Journal • Mar. 13, 2026

"From key grip to best boy, everyone on the show has a fabulous recipe to share," the description of the book reads.

From Salon • Oct. 12, 2022

Cyprus is the best boy ever and we are so excited that I'm pregnant again and we will be welcoming a baby girl into the family in October.

From BBC • Jul. 24, 2022

“Who’s the best boy in the whole wide world?”

From Los Angeles Times • Apr. 18, 2020

‘You’re the best boy in the world. I’ll never, ever forget you.’

From "Code Name Kingfisher" by Liz Kessler

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023