A.a round smooth stone (περιφερὴς λίθος μάρμαρος, Hsch.), “χεῖρας ἀπὸ ξίφεϊ τμήξας ἀπό τ᾽ αὐχένα κόψας, ὅλμον δ᾽ ὣς ἔσσενε κυλίνδεσθαι δι᾽ ὁμίλου” Il.11.147 (from which passage it was taken to signify the human trunk, Poll.2.162, EM460.17).
II. later, any cylindrical or bowl-shaped body :
1. mortar, Hes.Op.423, Hdt.1.200, IG22.1126.24, 12(5).872.82(Tenos, iii B. C.), PLille9.9 (iii B. C.), etc.
3. hollow seat on which the Pythia prophesied, hence prov., “ἐν ὅλμῳ κοιμᾶσθαι” Plu.Prov.2.14 ; “ἐν ὅ. εὐνάσω” Zen.3.63 ; τοῦ τοίχου τὸ μέρος τοῦ κατὰ τὸν ὅλμον (in the temple of Amphiaraus at Rhamnus), “Ἐφ.Ἀρχ.” 1909.271.
4. drinking-vessel, Menesth.1.