Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. naevĭus, a, um, adj. [naevus], that has a mole on his body, Arn. 3, 108 dub. (al. naevinos).
2. Naevĭus, a [naevus; hence, prop., one born with a mole or birth-mark], name of a Roman gens. The most celebrated member of it is Cn. Naevius, a Roman epic and dramatic poet, born A. U. C. 480. He made the first Punic war, in which he had served, the subject of a poem, in which he so boldly satirized the nobility, especially the Metelli, that he was forced into exile at Utica, where he died, A. U. C. 550, Cic. Brut. 15, 60; id. Tusc. 1, 1, 3; Gell. 1, 24, 2; 17, 21, 45.
Hence,