Green’s Dictionary of Slang

(W.I.) marijuana; also attrib.

1981		N. Farki Countryman Karl Black 12: ‘The brethren have any more of the ital,’ the man said. Karl took a cigarette from his breast pocket and put the butt between the man’s lips.
1986		R. Hewitt White Talk Black Talk 120: Den I said I burn up mi I-tal weed.