Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. cārĭno, āre, v. a. [for scarinare, root in scortum], to abuse, revile, blame ( = irrideo), Enn. Ann. 181; 229 Vahl.; cf. Serv. ad Verg. A. 8, 361, and Paul. ex Fest. p. 47 Müll.: carinantes = illudentes, Gloss. Isid.
2. cărīno, āvi, ātum, 1, v. a. [carina, II. B.], to supply with a shell; with se, of mussels, to get shells, Plin. 9, 33, 52, § 103.
Hence, P. a.: cărīnātus, a, um, keelformed, shell-formed: concha acatii modo, Plin. 9, 30, 49, § 94: pectus animalium, id. 11, 37, 82, § 207.