חפשו מילה כלשהי, כמו hipster:
 
1.
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.
מאת contractorpeon 2 במרץ, 2005
 
2.
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.
מאת Blissid 28 באפריל, 2010
 
3.
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.
מאת gatsby. 4 בספטמבר, 2008
 
4.
A bear
The Welch ate the human that got too close to its cubs.
מאת tittieballs 26 בינואר, 2011
 
5.
To masturbate in public with intent to be caught.
Watch the door im going to welch
מאת zhawk 21 במאי, 2013
 
6.
a term of measurement for tea.
This bottle contains two welchs of tea.
מאת danbarton 1 באפריל, 2009
 
7.
Another Way To Define Graped
Welches=Brand Of Grape Juice
You Just graped A Friend
You, To Friend:You Want Some WELCHES With That?
מאת Leak 5 באוקטובר, 2005