Top Definition
Someone who is in a bad mood all the time, or someone who hates fun.
Person A: Why is it that whenever someone suggests something fun Mark shoots it down?
Person B: Because he's a knoler.
by knolerhater January 05, 2009
5 Words related to Knoler
A very small jewish penis.
A man's knoler is his best friend.
by Mark January 24, 2005

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