Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cŏrĭārĭus, a, um, adj. [corium],
- I. of or pertaining to leather frutex, i. e. useful for tanning leather, Plin. 24, 11, 54, § 91.
Hence,
- II. Subst.: cŏrĭārĭus, ii, m., a tanner, currier, Plin. 17, 9, 6, § 51; Inscr. Orell. 4074 al.