not to be entered, θησαυρός Pi. P. 11.4; ἄ. ἐστιν ὁ τόπος Str. 14.1.44.
never setting, of stars, Sch. Arat. 632.
mostly as Subst. (masc. in h.Merc. 247, neut. in Hdt. 5.72, E. Ion 938), innermost sanctuary or shrine, Il. 5.448, 512, h.Ap. 443; εὐώδεος ἐξ ἀ. Pi. O. 7.32: metaph., ἐκ τοῦ ἀ. τῆς βίβλου Pl. Tht. 162a; ἄ. θαλάσσης Opp. H. 1.49, cf. Hymn.Is. 152.