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1.
1.)A person or thing that dents objects, usually metal.

2.) When in an argument, the person who disproves the apposing view without any logic, and makes the other person feel like a complete idiot.
Ryan- "So my son Damian got his drivers license today?"
Kieth-"Oh, so you have another denter in the family then huh?"
Ryan-"you bet!"

Paul-"Oh what a denter he is!! He got you bad!! How dumb do you feel?"
Zara-"Pretty Dumb, Paul! Pretty dumb."
by RachyLynn May 29, 2009