hardhat
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hard·hat
or hard-hat (härd′hăt′)n.
1.
a. A lightweight protective helmet, usually of metal or reinforced plastic, worn by workers in industrial settings.
b. Informal A construction worker.
2. Slang
a. An ultraconservative.
b. An extremely patriotic person with a conventional, usually unquestioning sense of morality.
adj.
1. Relating to heavy industry, construction, or demolition.
2. Informal Of, relating to, or characterized by extreme conservatism.
3. Slang Extremely patriotic.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.