Extero, éxteris, pen cor. extui, extrîtum, pen. prod. extérere. Plin. To beate out: to weare out: to whette, or grinde: to rnbbe harde.Cibum exterere.Cic.To concoct or digest.Messem. Varro. To thresh corne.Literam. Varro. To scrape or raze out a letter.
Lewis and Short: Latin dictionary
ex-tĕro, trīvi, trītum, 3, to rub out, bring out by rubbing; to remove by rubbing, to rub off or away (rare; not in Cic.). I.Lit.: extritus viribus ignis, Lucr. 5, 1098: jumentorum ungulis e spica exteruntur grana, Varr. R. R. 1, 52, 2: messem, Plin. 18, 30, 72, 298; Col. 2, 9, 11: littera extrita,
elided
, Varr. L. L. 5, 96 Müll.; id. R. R. 2, 1, 7: gemma politur ex marmore, ut inutilia exterantur, Plin. 37, 10, 62, 172: opus poliat lima, non exterat, Quint. 10, 4, 4: rubiginem ferro, Plin. 31, 6, 33, 66: congestas exteret ille nives,
will tread down
,
crush
, Ov. Am. 1, 9, 12; cf.: anima hominis magno pondere extriti,
crushed
, Sen. Ep. 57 med.—II.Trop., to wear out by use, to use up: tabes mercium aut fraus Seplasiae sic exteritur, Plin. 34, 11, 25, 108 Sillig (Jan. taxetur).