laundered articles, as sheets, napkins, and other flat pieces, that can be pressed quickly in a mangle
flatwork in American English
(ˈflætˌwɜːrk)
noun
sheets, tablecloths, etc., that are ordinarily ironed mechanically, as on a mangle, rather than by hand
Also called: flat wash
Word origin
[1920–25; flat1 + work]This word is first recorded in the period 1920–25. Other words that entered Englishat around the same time include: audio, checkout, follow-up, tie-in, zipper