Quickly switching between channels on a TV, as while looking for a program to watch. I'm channel-zapping, but it doesn't look like anything good is on.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
See channel hopping
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.