hard hat

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hard hat

[′härd ‚hat]
(engineering)
A safety hat usually having a metal crown; used by construction workers and miners.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
|the hard-hat diver, so called because of his helmet, prepares for another dangerous mission in 1952
Hard-hat campaign: Friends of the Earth make their point in the city centre.
Cover subject Molly Smith whips out her personalized fluorescent yellow hard-hat on page 27--a pair of them, in fact, the better to share with simpatico reporter Celia Wren--as she leads American Theatre readers on a tour of her venerable D.C theatre's glistening new facility, officially known as Arena Stage at the Mead Center for American Theater.