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1 definition by PConsuelaBH@yahoo.com

a male who appears as a mountain man, having a large gut, tousled hair, and ungroomed facial hair. yetties lack hygiene and social skills, often times unable to speak with females or even other persons. located in the northeast, rensselaer polytechnic institute has an abundant population of such yetties.
dude, that yetty was eating with his hands at commons last night!
by PConsuelaBH@yahoo.com September 18, 2005