Lewis & Short

rĕ-nĕo, ēre, v. a., to unspin, i. e. to undo, unravel what had been spun (poet.): at Clymenus Clothoque dolent, haec fila reneri, i. e. that the destiny is reversed, Ov. F. 6, 757: Parcarum fila, Stat. S. 3, 1, 171 (dub.); cf.: fila manu, Albin. 1, 444.