Chav

[PatC]

What is a Chav

[Mowbray]

A 'Chav' is someone who wears Burberry caps, sports gear, and lots of necklaces and rings.  These are people who are 'common'. 

Chav is just adopted from the Geordie word Charver.

[Xollob]

I strongly recommend Michael Quinion's website 'World Wide Words'. This man is the fountain of all wisdom when it comes to British etymology. If he thinks the word is of Romany origin, then it probably is.
http://www.worldwidewords.org/topicalwords/tw-cha2.htm

[londondave]

http://www.chavscum.co.uk/  will tell you all you need to know

[warrent9383]

I heard once that it actually stands for Council House And Violent... i dunno if its true but it works for me.