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.
লিখেছেন- contractorpeon 2 de মার্চ de 2005
To "black flag".

Meaning to make a bet, and lose it. Then not follow through with the consequences.
YOU: "I'll make a bet that Carlton suck and miss the 8, loser has to suck Suzis penis."

BlackFlag: "Carlton will win the premiership you douche, i'll take your bet"

Carlton go on to stink up the entire competition, blackflag loses the bet, and ignores that the bet was ever placed. Making him a dirty welch and the lowest form of life in the universe.
লিখেছেন- Blissid 28 de এপ্রিল de 2010
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.
লিখেছেন- gatsby. 4 de সেপ্টেমবার de 2008
A bear
The Welch ate the human that got too close to its cubs.
লিখেছেন- tittieballs 26 de জানুয়ারি de 2011
a term of measurement for tea.
This bottle contains two welchs of tea.
লিখেছেন- danbarton 1 de এপ্রিল de 2009
purple weed. ie: grapes.
Yo, I got dem welches!
লিখেছেন- Lowki 28 de এপ্রিল de 2006
Another Way To Define Graped
Welches=Brand Of Grape Juice
You Just graped A Friend
You, To Friend:You Want Some WELCHES With That?
লিখেছেন- Leak 5 de অক্টোবার de 2005

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