Meaning

noun a zealously energetic person (especially a salesman)

noun a native or resident of Minnesota

noun any of various terrestrial burrowing rodents of Old and New Worlds; often destroy crops

originPerhaps an adaptation of Cajun French gaufre (literally “honeycomb, waffle”), based on the analogy of holes in the ground to the indentations in a honeycomb or a waffle (doublet of waffle). Alternatively, from Muskogean.

Etymology from Wiktionary, CC BY-SA 3.0