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1.
a persons mouth in comparison to a genital opening or butthole.
That girl needs to shut her dang junkhole; she is always running her mouth!
by the croz December 22, 2008
 
2.
hole in the front of a guys underwear where he whips it out to piss.
"hey, do your boxers have a junk hole? because mine do!"
by lillikins September 02, 2009
 
3.
the orifice or opening of a person's genitals (i.e. opening of the urethra in a man and a womans vaginal opening).
dude, you are being such a crusty junkhole!
by Croslin Endo October 09, 2008