prytănēum (noun N) = πρυτανεῖον:
* The town-hall, a public building in some of the Grecian states, where the Prytanes assembled and dined, and where those who had done special service to the State were entertained at the public expense, Cic. de Or. 1, 54, 232; Cic. Verr. 2, 4, 53, § 119; Liv. 41, 20.—Also in RHEGIVM, Inscr. Orell. 3838; in Cyzicum,Plin. 36, 15, 23, § 99.

s. TLL