'Sitz bath' definitions:

Definition of 'sitz bath'

(from WordNet)
noun
A bathtub in which your buttocks and hips are immersed as if you were sitting in a chair and you bathe in a sitting position [syn: sitz bath, hip bath]

Definition of 'Sitz bath'

From: GCIDE
  • Sitz bath \Sitz" bath`\ [G. sitzbad.] A tub in which one bathes in a sitting posture; also, a bath so taken; a hip bath. [1913 Webster]