Top definition
A place near the town of Aberdare, in Mid Glamorgan (Rhondda Cynon Taff) Consists of chavs and other music cultures, druggies and just normal people. Cwmbach is just like any other town.
Doesn't Cwmbach seem like Abercwmboi?
Yes!
by YoMamma! :D February 25, 2011
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