to avoid doing something you have promised to do, especially not to pay a debt
Marty got his thumbs broken by Vito after he welched on a gambling debt.
by contractorpeon March 3, 2005
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To welch. To go back on your word. A highly derogatory word made popular through the be-mag messageboard crew in response to wirolla's act of cowardice.
Wirolla had two options; tits or GTFO. He welched, he chose the second option.
by gatsby. September 5, 2008
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evaded reparation or satifaction of a debt, sometimes by citing a technicality
that fucker welched on the Giants - Eagles (he bet they wouldn't cover the spread and they fucking did!)
by danielwebster May 19, 2007
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To shove Welch’s fruit snacks up someone’s ass.
Bro last night I welched this bitch than ate the booty like groceries.
by Fruit Snacks August 15, 2018
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Treated someone like the Welsh have been throughout history, that is ripped off. So the winner of a bet may recieve a welsh prize - nothing. From the outdated adjective welsh - meaning disadvantaged(in poverty and fate).
TheTruth : Yeah Dave did win the bet but I think he may be Welsh so it doesnt count.
Dave : I've been welched
by anothermadeupname April 20, 2010
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'Welching' is the clunking of the base of a beer bottle or glass, whilst making various grunting or 'pirate-sounding' noises such as arrrrrr, or oarrrrr... etc etc. This is as opposed to 'clinking' or 'chinking' of the top of a bottle, and it perceived as far more masculine when in a group of lads who are all very drunk, and in agreement of a certain point of topic.

It is often accompanied by the raising of one's right elbow upwards, whilst making other peculiar noises, that would suggest that one has slightly lost the plot.
There was some serious welching going on last night!

When in agreement, one member calls out 'welching!' and group members proceed to welch in above said fashion.
by ukbuckstop July 9, 2010
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so drunk death is your near future a trip to the hospital is also an extreme possibility
Dude i was welched last night supposedly i made love to a jar of peanut butter.
I was welched last night, I had to go to the hospital and they stuck a cathater in my pee hole.
by Asianpersuasion012 December 22, 2008
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