This word, with many different spellings, is a substitute for "Hello, what are you doin?" used mainly by the youth of England (mainly private school kids, and "gansta's" in state school education) to sound like hard, old Jamaican drug dealers. Meaning: "What is going on?" (i.e. a replacement for sup (what is up?))
something you say to your friends meaning 'whats going on then?'
"hey georgia wagwon then?"
"nothing much.. what about you imogen?"