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1.
Shortform of Gherkin, the type of small warty pickle; also used to refer to a senior male's genitalia.
Damnit Clancy! I don't wanna to hear about your nasty little gherk(in), I'm underaged!
by Schitzy June 09, 2005
 
2.
Noun: A person who is gullible and easily taken advantage of.
Hey Gherk! Party at your house...you bring the beer.
by Yakutsk June 01, 2005