ἀρχεῖον

A. town-hall, residence, or office of chief magistrates, Hdt. 4.62 (dub.), Lys. 9.9, X. Cyr. 1.2.3, Isoc. 5.48, Arist. Mu. 400b16; τὰ ἀ. καὶ βουλευτήρια D. 10.53, cf. IG 2.475.21, al., OGI 268.18 (Nacrasa, iii B. C.), PGrenf. 2.30, al. (ii B. C.).

2. τὰ ἀ. public records, archives, prob. in SIG 684.7 (Dyme, ii B. C.), cf. D.H. 2.26, PTeb. 397.19 (ii A. D.).

II. college or board of magistrates, magistracy, Arist. Pol. 1298b28, 1304a19: but in pl., special boards, ib. 1299a36, 1331a25, Plu. Ages. 33; ὀμόσαι τὰ ἀ. IG 2.332.45, cf. OGI 218.149 (Ilium), etc.; ὅσοι ἀρχείων μετέχουσιν καὶ δικαστηρίων SIG 286.20 (Milet., iv B. C.).

III. in the Roman camp, = principia, head-quarters, Plu. Galb. 12.