1. a protective helmet of metal or plastic, esp. as worn by construction or factory workers.
2. a uniformed soldier of a regular army, as opposed to a guerrilla.
Pronunciation: (härd'hat"), [key]
1. a construction worker, esp. a member of a construction workers' union.
2. a working-class conservative.
pertaining to or characteristic of hard-hats: enlisting hard-hat support for his policies. Also,hard'hat".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.