Is it a sweatshirt or a jacket?
Is it a sweatshirt or a jacket?
Sounds like it!
www.oed.com/dictionary/sweatshirt_n?tl=true
The earliest known use of the noun sweatshirt is in the 1920s.
OED’s earliest evidence for sweatshirt is from 1929, in Sears, Roebuck Catalogue.
EDIT: I never really thought about the word until now, realized that it’s a portmanteau of “sweater” and “shirt”.