(1):

(n.) A member of the Progressive Party; a Bull Moose.

(2):

(n.) A large cervine mammal (Alces machlis, or A. Americanus), native of the Northern United States and Canada. The adult male is about as large as a horse, and has very large, palmate antlers. It closely resembles the European elk, and by many zoologists is considered the same species. See Elk.