Lewis Short
ăcŏpos | -us, i | ăcōpon, i | -um | Aco-pum (noun M.n.f.n) = ἄκοπος: m., or , , , n., = (removing weariness, pain, etc.).
* A kind of stone, perh. crystalline quartz or spar, Plin. 37, 10, 54, § 143.
* F., a plant useful in childbirth, also called anagyros, id. 27, 4, 13.
* (sc. medicamentum or unguentum), , n., a soothing salve, Cels. 4, 31; 5, 24; Plin. 23, 8, 80; 29, 3, 13 al.
Charlton T. Lewis, Charles Short, A Latin Dictionary