Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
imporco (inp-), no perf., ātum, 1, v. a. [in-porca], to put into furrows; imporco αὐλακιζω, Gloss. Philox.: semen imporcatum occabimus, Col. 2, 10, 6.