Stree' Sla' Share definition Flag aka sla; vernacular used mainly in the Oakland of Pittsburgh; the end of every word is dropped Sla' i' tha lan' spo' a' tha Pl'hou'= Street Slang is the language spoken at the Playhouse; To' i' tha ho' mana'= Todd is the house manager Stree' Sla' by Bo'Mana' June 6, 2003 0 0 Get merch Get the Stree' Sla' mug. Buy Now — $32.95 See more merch