sweatpants

[swet-pants] /ˈswɛtˌpænts/

noun, (used with a plural verb)

loose-fitting pants of soft, absorbent fabric, as cotton jersey, usually with a drawstring at the waist and close-fitting or elastic cuffs at the ankles, commonly worn during athletic activity for warmth or to induce sweating.

Also, sweat pants.

Origin

1920-25; sweat + pants

Examples from the web for sweatpants

They fail to brush their teeth, or start wearing sweatpants instead of fitted clothes.
sweatpants and cross training type running shoes that provide lateral support are preferred.
She was wearing green sweatpants and a light colored flowered t-shirt.
Suspect was wearing gray sweatpants, a gray hoodie, and a camouflage jacket.
He was last seen wearing a white sweatshirt and gray sweatpants.
Boys can wear running shorts or sweatpants with fitted tops, or with your shirt tucked in.
Tennis shoes, boots and sweatpants are not allowed for exchange purposes.
Don't forget to bring sweatpants, a t-shirt, and gym shoes to each meeting.
He had mud all over his sweatpants and red stains on his thermal boxer shorts.

Word Origin and History for sweatpants

by 1946, from sweat + pants.