Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

prytănēum, i, 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; id. Verr. 2, 4, 53, § 119; Liv. 41, 20.
Also in RHEGIVM, Inscr. Orell. 3838; in Cyzicum, Plin. 36, 15, 23, § 99.