bloomers

noun[plural only]2

1. •
   (informal) Women’s underpants with short legs; knickers or drawers.
2. •
   (old-fashioned) Any of several forms of women’s divided garment for the lower body.

   • Moreover, the family realized perfectly that Alix would have clipped her thick hair, and taken to bloomers or knickerbockers outright, […] — 1920