nonce-wd. [f. CRAB sb.1, after ornithologist, etc.] A student or collector of crabs.

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1824.  J. Macculloch, Highl. Scotl., III. 421. The island furnishes rare minerals to the mineralogist and rare crabs to the crabologist.

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1824.  New-York Tribune, 8 May, Sunday Mag., 2/3. I’se a crabologist, I is, and I knows all ’bout de crab nature.

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