Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. pīlātus, a, um, Part. and P. a., v. 1. pilo.
2. pīlātus, a, um, adj. [pilum], armed with javelins: agmina, Verg. A. 12, 121: cohors, Mart. 10, 48, 2.
3. Pīlātus, i, m., a Roman surname; esp., Pontius Pilatus, a Roman governor of Judœa, in the time of Jesus, Vulg. Matt. 27, 2 et saep.; Sedul. 5, 116.
1. pīlo, no perf., ātum, 1, v. a., = πιλέω, qs. to ram down; hence, in gen., to thrust home (ante-class. and rare): hastam pilans prae pondere frangit, Host. ap. Serv. ad Verg. A. 12, 121 (pilans id est figens, Serv.).
Hence, pīlātus, a, um, P. a., closepressed, thick, dense = densus, pressus.