κάθισμα
From LSJ
English (LSJ)
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 base of a still, Zos.Alch.p.224B. II sinking, settling down, of a wall, Apollod.Poliorc.150.1. 2 sediment, Sch.Nic.Al. 95.