Definition of "dro"

They upset for sho', cause they think they know / That they catching me with plenty of the drank and dro

2005, Chamillionaire (featuring Krayzie Bone), "Ridin'", The Sound of Revenge

Premro, full of that dro.

2005, “Stay Fly”, in Jordan Houston, Darnell Carlton, Paul Beauregard, Premro Smith, Marlon Goodwin, David Brown, Willie Hutchinson (lyrics), Most Known Unknown‎, performed by Three 6 Mafia (featuring Young Buck, 8 Ball, and MJG), Sony BMG

The 'Licious Lovers / Known for the closed lips / Letting the 'dro drift/whole click, boat trips/Pocono slope shit / Running our own shit

2006, Noire [pseudonym], Thug-A-Licious: An Urban Erotic Tale, New York, N.Y.: One World/Ballantine Books, unnumbered page