hard hat
also hardhat, hard-hat, late 14c., "helmet;" 1935, "derby hat;" meaning "safety helmet" is from 1953; used figuratively for "construction worker" from 1970.
| 词汇 | hard hat |
| 词根词缀 | Online Etymology Dictionary hard hat also hardhat, hard-hat, late 14c., "helmet;" 1935, "derby hat;" meaning "safety helmet" is from 1953; used figuratively for "construction worker" from 1970. |
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