Top Definition
A very fat, disgusting and unattractive girl. They are found at buffets, bowling alley's and bars with drink specials. The swamp dawnkey is a predator and will sexually assualt anything.
Damn! Did you see that one with the acne, chugging the Pabst Blue Ribbon? What a swamp dawnkey!
by billy3000 January 13, 2006

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