A White Knight is someone who goes on to the website Urban Dictionary and creates a definition under the name of their more than likely obese girlfriend. Type in almost any girl's name into the search bar and you will pull up one of these definitions.

Typically they will state what "a cool person they are", "how smart they are", "how cute they are", or other various statements about a girl no one but said White Knight gives a fuck about.

The only reason such definitions are even made are so they can show their girlfriend (obese) at how creative and cute they think they are being despite the fact 1000s of other dick bags have done the same thing already.

These definitions are quite annoying especially if you have the Urban Dictionary app for your Droid and constantly get them as a random definition.
Examples of douche bags being White Knights:

1. Kelly

The smartest person ever, someone with a great personality, has golden locks of hair.

2. Susan

The face of a tranny, hands of a man, junk in the trunk.
by Ronny Cordova June 30, 2010
A term used by retards on internet forums to describe somebody who gives a compliment to a female user. Said retards typically make huge leaps of assumption and often think of the person posting the compliment is a white male, lonely, and under the guise that posting compliments anonymously on the internet will somehow make the girl love them or have sex with them out of gratitude.
A) "Hey, you look really pretty."
B) "I fucking hate white knights like you. These girls aren't going to have sex with you. Try leaving your basement once in a while, creep."
A) "I'm a female, and all I did was say she looks pretty. What's your problem?"
B) "Urrr... HURR DURR Sorry I thought you was a guy and it's not okay for guys to give compliments derpderpderp."
by Furbag June 23, 2012
financial savior; a person or organization that rescues a business company, especially from an undesirable takeover
by Sara September 10, 2003
A White, southern gangsta, wannabe; a "Whigger". Compare "Black Knight."
Man, look at those private school White Knights in the throwback jerseys! Lifestyles of the White and Knighty!
by WhiteKnightNC March 23, 2009

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