尻座 is read as こうざ (kouza) and means crouching.
こうざ
kouza
しっぽ
tail (animal)
しり
consequence
そくざ
immediate
こざ
sitting cross-legged (i.e. Indian style)
せいざ
constellation
seiza
かみざ
chief seat
academic university unit (professor, lecturers, etc.)
account (e.g. bank)
ぎんざ
Ginza (Tokyo neighborhood)
ざ
attaches to the names of constellations
れんざ
sitting in a row (in the same seat)