sweatpants
/ˈswɛtˌpænts/
noun
- Loose, comfortable pants made of thick, soft cotton or fleece, typically worn for exercise or relaxing.
- The gym requires students to wear sweatpants or shorts for warm-up exercises.
- He wore gray sweatpants and a hoodie to the casual movie night.
- After the long run, she changed into her sweatpants and sat on the couch.