Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dē-culco, āre, v. a., to tread down, trample upon (post-Aug. and rare): bacas in qualo pedibus, Plin. 17, 10, 11, § 61: aspros molares, Stat. Th. 1, 362; Tert. Apol. 46.