long underwear

noun

1. a close-fitting, usually knitted undergarment with legs reaching to the ankles, as a union suit, worn as protection against the cold.

Example Sentences

I wear long underwear not just in the winter, but in the spring, fall, and occasionally the summer.

From The Daily Beast

These men seemed to be wearing greasy fezzes and dark, baggy long underwear with buttons and vestigial lapels.

From Project Gutenberg