[Meaning] a level/smooth stone.1
"It is possible that they made a landing into the Chersonnese from some levelrock, out of the sea, and reached the rear of the enemy".2
1Likewise or similarly in other lexica; see the references at Photius lambda236 Theodoridis. Probably generated, as Latte on Hesychius suggests, by one of the four instances (all accusative case) in Ezechiel 24-26 LXX.↩
2Quotation unidentifiable. For the Chersonnese see generally chi 215.↩