Definition of "gnawer"

One who gnaws.

1. A rodent or other animal that gnaws.  quotations  examples

   Quotations

   • South America is characterized by possessing many peculiar gnawers […] .

     1839, Robert FitzRoy, Phillip Parker King, Charles Darwin, chapter 7, in Narrative of the Surveying Voyages of His Majesty’s Ships Adventure and Beagle, between the Years 1826 and 1836, […], volumes (please specify |volume=I to III), London: Henry Colburn, […]

   • The Norway Rat is a good digger and a superb gnawer.

     1947, Lloyd Glenn Ingles, Mammals of California, Stanford University Press, page 182