either of the two weekday time periods during which many people drive to or from work and, while doing so,
listen to a car radioterm used chiefly in connection with radio programming
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.