ex-cerno, crēvi, crētum, 3, v. a., to sift out, to separate (perh. not ante-Aug.).
I In gen.: furfures a farina, Col. 8, 4, 1: frumenta, i. e. to cleanse , id. 2, 20, 5; cf.: caementa cribris, Vitr. 7, 6: ex captorum numero excretos Saguntinos in patriam remisit, Liv. 28, 39, 10; cf.: excernere parvos, Grat. Cyneg. 289: omnem forensem turbam excretam in quatuor tribus conjecit, Liv. 9, 46 fin.—Part. perf. subst. : excreta tritici, what is sifted out , the chaff , Col. 8, 4, 1; 8, 8, 6.—
II In partic.
A To keep apart , keep away : multi jam excretos prohibent a matribus haedos, Verg. G. 3, 398 Heyne and Forbig. ad loc.—
B To carry off , discharge (from the body): venter excernit mollia, Cels. 2, 8: quae excreturi sumus, id. 4, 1 al.