ψυχαγώγιον

τό
A. = ψυχομαντεῖον, a place where departed souls are conjured up, EM 819.25.
II. air-hole, ventilator in the shafts of mines, Thphr. Ign. 24 (v.l. ‐εῖον).
III. reservoir, reserve water-tank, AB 317.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project