ἐν πέτροισι πέτρον ἐκτρίβων → by grinding stone against stones
amellus: i, m.,I the purple Italian starwort: Aster amellus, Linn.; Verg. G. 4, 271 (cf. Serv. ad h. 1.); Col. 9, 4, 4.
ămellus,¹⁶ ī, m., amelle [fleur]: Virg. G. 4, 271
