Green’s Dictionary of Slang

1. hydroponically grown marijuana; also as adj.

1997		N. Barlay Curvy Lovebox 33: What happen to hydro Thai or even de Thai stick or de lunatic Durban or dat sticky fokkin orange skunk.
1997		Nice & Smooth ‘Scared Money’ 🎵 Sippin on the Heine, puffin’ on the ’dro.
1999		Noreaga ‘Blood Money Part 3’ 🎵 Dirty cash, smoke hydro green / Still mix it wit hash.
2000		R.G. Barrett Leaving Bondi (2013) [ebook] ‘I won’t tell the drug squad about their little hydro operation’.
2004		Simon & Pelecanos ‘Amsterdam’ Wire ser. 3 ep. 4 [TV script] Boy went back to the West Side to cop some hydro. He could have bought the same weed where he was, right?
2004		T.I. ‘I Can’t Quit’ 🎵 Pouring out liquor at shows / Passing niggas the dro.
2005		G. Pelecanos Drama City 106: Rico Miller hit the hydro he was smoking.
2007		UGK ‘Gravy’ 🎵 I keep a magnum for they back and I keep a swisha full of ’dro.
2007		L. Redhead Cherry Pie [ebook] ’ ‘She smoking more dope? [...] ‘Stronger shit, like hydro?’.
2013		K. Shea ‘Having Chiqui’ in ThugLit July-Aug. [ebook] Sweet-tasting Canadian hydro.
2020		G. Krauze What They Was 115: Have you got dro? Gotti says nah not even [...] but Jermain’s got blue cheese.

2. amphetamine.

2001		ONDCP Street Terms 12: Hydro — Amphetamine.
2001		‘Randy Everhard’ Tattoo of a Naked Lady 281: It’s crystal meth. Hydro. Good shit, too.