Draw is just the another term for an amount of cannabis not solid in particular but any cannabis( names for solid include Puff hash solid!lol rocky in some parts - eg - "sell me a draw", "have you got any draw?" in the old days u would get a 5 draw - £5 and a 10 draw - £10 would also call it gear as in "u got any gear to sell?"
no one calls it dro over here unless your some kind of cunt