κάθισμα,ατος,τό,
A. part on which one sits: in pl.,buttocks, Sch. Aeschin. 1.126 .
2. seat, Simp. in Ph. 347.9 , Pall.
in Hp.Fract.
12.278C.
3. baseof a still, Zos.Alch. p.224B.
II. sinking, settling down, of a wall, Apollod. Poliorc. 150.1 .
2. sediment, Sch. Nic. Al. 95 .