Steeze is simply steeze. It is supposed to mean style and ease but hell you can use it for anything. Steeze can be jizz and a nice trick when your skating, snowboarding, dirtbikin, and a number of other sports.
"Ey yo dawg that shit was STEEZY MC GEEZY STRAIGHT OUT OF THE WEEZY YO. DAMN THAT WAS FRESH. I LIKE UR STEEZY STYLE DOG."
"I got a steezy ass half o of danks dog. peep this shit."