Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ĕbŏrārĭus (ebŭr-), ii, m. [ebur], a worker in ivory, Cod. Just. 10, 64, 1; Inscr. Orell, 4180; 4302.
ĕbŭrārĭus, v. eborarius.