A person (usually a male) who sees the typical maiden in distress, and believes that he can help her. A male version of the "mother figure" that some girls become.

White knight term can also be applied to a person participating in online forum who is not tasked with moderating it, but engages in the activity nonetheless - so-called backseat modding. The underlying causes for the behaviour are the same - person is anthropomorphising the forum and sees it as a "maiden in distress" and charges to the rescue.
"Why is he going out with her? She's broken, and a little crazy."

"The fool's just being a White Knight."
by ahawtf June 29, 2012
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A White Knight is a type of male that will do anything for a female. This includes many things such as; ignoring your friends to talk to girls, breaking the bros before hoes code, hanging out with girls more than your bros, defending all females for no apparent or clear reason and lying to your friends and family to be with females.
Bro 1: Yeah, you see that guy Rudi and Wiliam?

Bro 2: Yeah they're such White Knights
by WetSpagheteronio December 1, 2019
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A beta male who goes out of his way to defend all women (commonly when she is insulted by someone online). They are desperate to get laid and defend women in hopes of the woman having pity of him and offering the white knight sex as a reward.

spoiler alert: they never get offered sex by the women they defend, they will probably spend their lives completely alone in hopes of having sex with one of the women they defend
1- That looser is a white knight
2- Stop white knighting you fucking virgin
3- That idiot is acting like a white knight
by thot_slayer 69 March 23, 2020
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A male that sports white undies and works a physical job or competes in physical activities, the likely hood of sweeting and secreting "assbutter" would inevitably leave fecal stains within the white undies left for the wife or girlfriend to stare at disgust.

"Olny the bravest traverse the gauntlet of white undies" The White Knight
"I seen Ralph after rugby practice slip on some white undies hes fucking brave !

"yeah thats what you call doing a white knight"
"Knight in shinning undies haha"
by ICEsmoke September 14, 2018
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1. An insecure dumbass male who thinks he can get something out of saving someone in distress.

2. An OG member of the kkk who fucks up blacks
Example (Definition 1):

Guy: Oh shit there's a girl getting trolled, *goes to save her*
Trollers: Faggot white knight.

Example (Definition 2):

KKK Member: *dangling fried chicken as bait* Here nigga nigga here nigga nigga.
by LolMeowMeowMeowKuutra September 25, 2015
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Twitch employee: Alinity didn't do anything banworthy
Sane person: Fucking off yourself White Knight
by Hentai-Senpai July 25, 2019
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A White Knight is Evyn Dyck
I am spending time with a girl instead of my friends, therefore i am a White Knight
by buxkshot February 28, 2020
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