A colloquial contraction of "go ahead," used to urge someone to proceed with some action or speech. Y'all can g'head and get started. I'll be in shortly. A: "I just think… Oh, nevermind." B: "No, g'head." A: "Well, I think we need a break from each other."
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.