Strain of marijuana. Usually light christmas tree color of green with (possibly) some crystals or lite white frost effect to it. Origins are actually from canada!
alot of weed. usually equal to a little over 2 quarter sacks depending on your local dealer. Cost varies, in TX it is 80 for indian red hair and 120 for blueberry dro. a quarter is 25 and a dime is a dime. ($10)
jack: Yo i just picked up an ounce of dro!
Jill: Illgrab the bong and you start packin that shit!