Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
scărīfo (-īpho; later collat. form scă-rīfĭco, Pall. 4, 10, 28; cf. pass. scarifio, Scrib. 262 dub.), āvi, ātum, 1, v. a., = σκᾰρῖφάομαι, to scratch open, scarify: gingivas, Plin. 32, 7, 26, § 79: truncum arboris, Pall. Mart. 10, 28: sinapi compressum, Col. 12, 57, 1: dentes, Plin. 28, 11, 49, § 179; cf. id. 30, 3, 8, § 21.