Meaning
Top-quality ganja — a short form of 'high grade' (grade herb). 'Di grades' is the good, strong, clean herb, prized above cheap, harsh, low-grade weed, and to smoke 'pure grades' is a boast of quality. Common in reggae and dancehall herb-talk, the word belongs to the whole vocabulary of ganja and its grades, and it names the premium stuff worth seeking out and paying for, the herb a connoisseur of the sacred plant wants in his spliff.
Examples
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Him only deal wid di grades.
He only deals with top-quality herb.
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Di grades strong an clean.
The high grade is strong and clean.
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Pass di grades, mi bredren.
Pass the good herb, my brethren.
Origin
A short form of 'high grade' (top-quality ganja). See [[high-grade]].
How it’s used
Premium ganja; short for 'high grade'. See [[high-grade]], [[sensimilla]].