ἐν πέτροισι πέτρον ἐκτρίβων → by grinding stone against stones
prōvŏcātor: ōris, m. id..I In gen., a challenger to combat, Liv. Epit. 48 med.; Just. 10, 3, 3; 33, 4, 12; Gell. 9, 13, 4; Flor. 2, 17, 11.—II In partic., a kind of gladiator, Cic. Sest. 64, 134; Inscr. Orell. 2566 and 2568.
