A form of PCP that can be sprinkled on a cigar (blunt) or a joint. Also can mean weed, or sometimes crack on a blunt. (Illy is for smoking)
I was in St.Jamestown (Toronto) and i was wit ma bois.. we was all chillin smokin wen this guy was all like
'ayoo wut tha dilly, sprinkly the illy on the philly'
September 03, 2004