būleutērĭum — Lewis & Short
būleutērĭum (-on), ii, n., = bouleuth/rion,
in curiā Syracusis, quem locum illi buleuterium nomine appellant,Cic. Verr. 2, 2, 21, § 50:
Cyzici et buleuterion vocant aedificium amplum sine ferreo clavo, etc.,Plin. 36, 15, 23, § 100.