Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sub-sĕco, cui, ctum, 1, v. a., to cut under, cut away below; to clip, pare (rare; not in Cic.): stramentum et manipulum falce, Varr. R. R. 1, 50, 1: herbam. id. ib. 1, 49, 1: legumina, id. ib. 1, 23, 3: radices, Col. 2, 9, 10: partes, unde creatus erat (Saturnus), Ov. Ib. 276: ungues ferro, id. F. 6, 230: papavereas ungue comas, id. ib. 4, 438; Cels. 7, 33.