DCHP-1 Online
ground chuck Obs. 
a large burrowing rodent, Marmota monax, common in eastern and central Canada.
See also: groundhog (def. 1)
- 1828 There various furs for caps are found: The beaver, coon . . . ground chuck. . . .
- 1828 There various furs for caps are found: The beaver, coon . . . ground chuck. . . .