Breadcrumb Home > Dictionary > Index B best boy: Meaning and Definition of Find definitions for: best' boy' Pronunciation: [key] — Motion Picture and Television Slang. Motion Picture and Television Slang. the first assistant to the head electrician. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. best-ball match best-case TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: acme Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language