Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
spīcātus, a, um, Part., v. spico.
spīco, no perf., ātum, 1, v. a. [spica], to furnish with spikes or ears (post-Aug., and usually in the part. perf.): grana in stipulā crinito textu spicantur, shoot out or put forth ears, Plin. 18, 7, 10, § 60: chamaecissos spicata est tritici modo, id. 24, 15, 84, § 135: herbarum spicatarum genus, id. 21, 17, 61, § 101: testacea spicata, a pavement of bricks, laid in the shape of ears of corn, Vitr. 7, 1 med.; Plin. 36, 25, 62, § 187: quam longa exigui spicant hastilia dentes, sharpen to a point, Grat. Cyn. 118: spicatae faces, id. ib. 484: animantes spicatae aculeis, Min. Octav. 17 fin.