Definition of "blim"

Last night I went out driving in my car. I sparked up a fat spliff of fucking soap bar. A blim-burn burned right down to my dick and while I was distracted I fucking crashed into a brick wall, the car was fucking battered. The bonnet flipped up and the windscreen shattered. You're better of smoking the green instead cause it don't blim-burn and it's better for your head. […] Lying in your bed dropping blims on your pubes. Selling draw to your mates but it's really Oxo cubes. […] Well anyway, I think it's better myself to lean forwards when smoking soap bar because you are less likely to blim-burn.

2003, “Soap Bar”, in The Manifesto‎, performed by Goldie Looking Chain

Getting stoned in Afghanistan was an extreme sport, a very long way indeed from the polite blims of hash that middle-class Londoners sometimes consume at parties.

2005, James Fergusson, Kandahar Cockney, page 322

Have those chaps nothing better to do than to bust me for a blim?

2008, Dhivan Thomas Jones, Green Eros, page 114

It's when you get a blim of hash and get it between two really hot knives, and then honk it up through a bottle or something … I think.

2010, Jesse Armstrong, Sam Bain, Peep Show, season 7, episode 5, spoken by Dobby (Isy Suttie)

— Can anyone spair us a blim? Mags sez.

2011, Niall Griffiths, Grits, page 274