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1.
A jaunpiece ju-awn/pees,noun:

Used in place of forgotten words.

Jaunpiece can also be used to create a
sentence that won't offend.
I was taking a walk down jaunstreet when this vicious jaunpiece came out of no where and mauled my oily face.
Hey Bobby, xyz, your jaunpiece is hanging out.
by Dutherkin February 21, 2008