To improve drastically
Verizon has redefined its broadband service with the introduction of FIOS (Fiber Optic Online Servce).
by Jonathan Archer September 18, 2005
A person who constantly redefines other people's submissions in the Urban Dictionary.
I posted a new entry in the Urban Dictionary and some redefiner posted the same definition under me.
by Hackermom November 9, 2005
A douchebag who posts redundant definitions on Urban Dictionary. A redefiner.
Redefining Douchebag: I think I'll post a definition of "douchebag" on Urban Dictionary.

Intelligent Person: But there are 219 definitions of "douchebag" there already. What do you have to say that hasn't already been said multiple times before?

Redefining Douchebag: Duhhh... I guess I could offer myself as an example...
by Soph0phile December 16, 2011