thermal underwear

[ thur-muhl uhn-der-wair ]
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noun
  1. underwear designed to retain body heat in cold temperatures.

  • Also called ther·mals [thur-muhlz] /ˈθɜr məlz/ .

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

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