Top Definition
To ruin or totally fail at an action or procedure which requires the lowest ammount of human intelligence
"you realy knibbsed that up!" or "you are such a knibbs!"
by official word guy 2k14 December 04, 2014
1 more definition
To fondle children.
Meagh, I Knibbed him. Only 8 he was.
by spunko November 28, 2003

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