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1) A terminology used to describe when someone is holding onto something extremely tight, due to a stressful or otherwise tense situation.

2) Also a synonym for someone feeling stressed, or tense about life.
"When we took that corner at 95, everyone in the car had white knuckles"

"You've had white knuckles since you got served with divorce papers, are you going to be ok?"

"We call him white knuckles, he stresses about EVERYTHING!"
by Capso March 06, 2010
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2
Awaiting an outcome, or termination, of something with almost unbearable anticipation (as in clenching one's fists tightly to get through the agonizing final days or moments of waiting for something to happen or be over with)
Brooke's mom was told she couldn't have a drink for 30 days before the wedding, and she knew she would have to white-knuckle it!
by Gregor! July 22, 2006
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3
To hold somthing with your hand(s) in a constant position so tight and long that blood rushes away from your knuckles and they become pale and sweaty.
He was white knucklin' the steering wheel.

That new video game will give you white knuckles.
by HybridFlare September 16, 2005
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5
when a man ejaculates but instead of shooting he only dribbles over his knuckles ... hence white knuckle.
friend: i had a great toss last night
mr a : really all i got was white knuckle
by mr lover luva June 07, 2009
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6
When someone sucks at everything but can't admit it to themselves and get angry at everyone trying to ruin specific peoples lives but fails at it. Especially when it comes to sex they are ALWAYS white knuckled
See that girl?
Yea
She's a white knuckle, don't talk to her! she'll make you regret it!
by CheetoMan January 16, 2012
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