'Dewclaw' definitions:

Definition of 'Dewclaw'

From: GCIDE

Dewclaw \Dew"claw`\, n. In any animal, esp. of the Herbivora, a rudimentary claw or small hoof not reaching the ground. [1913 Webster]
Some cut off the dewclaws [of greyhounds]. --J. H. Walsh. [1913 Webster]