Someone on a train who gives you a vein, because something they are doing is annoying you, perhaps even their face!
"That person over there is the ultimate vein on a train."

"I wish that person would turn their music off, they're becoming a vein on a train."

"Why does she feel the need to constantly purse her lips, she is a massive vein on a train."
by Leonard Bott III May 17, 2008
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The name of the vein in your penis that brings most of the blood for your erection, ultimately giving you game.
Dang son ive got mad game cuz my game vein is pumping rn
by Winkey719 June 4, 2015
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British and Commonwealth, esp. Antipodes

an erect penis with azure veining and jerry's helmet locked and loaded and about to deliver a large quantity of love custard over a young lady's tits or other suitable target.
"Dave pulled his blue veined junket gun from it's fleshy holster and squeezed off half a pint of baby batter over Marcia's tits"
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To be "all veined out" is to be in a bailing on your friends type of mood, or for something to suck
Damn, john doesn't want to hang out tonight, he's all veined out.

This store is all veined out.
by UltraViolentClockwork November 10, 2017
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very hot and sexy always is top of the frnds has a dog named coco
OMG I WANNA BE Vein

HE IS SUCH a Vein (sexy af)
by ye so wat July 7, 2021
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Something children find attractive, mostly emos have veins that stick out
“I love veins their so hot and I love emos with veins”
by QLouster September 13, 2021
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A straw you use to drink urine straight from the kidney
I will use your veins to drink urine from your kidney
by Urine Drinker March 24, 2022
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