ἐν πέτροισι πέτρον ἐκτρίβων → by grinding stone against stones
conscensus: a, um, Part., from conscendo.conscensus: ūs, m. conscendo,I an ascending, mounting (eccl. Lat.), Hilar. Trin. 1, 20; Sulp. Sev. Ep. 2, § 17 Halm.