At least an ounce of marijuana or a growing marijuana plant. Rooted from "Red" (weed) being exchanged for "green" (cash) and "Roman" referring to a large or growing object (like how the roman empire was always growing and/or was generally large.) Hence: "Roman (1 oz.+ or a growing plant) Red (marijuana)"
DEALER: I'll sell you a nice bag of the roman red for $200.

TEACHER IN SCHOOL: Hey! you kids dealing again?

DEALER: Fuck, I'm goin' ta jail, I'm goin' ta jail, I'm goin' ta jail!!!
by Thikr December 5, 2007
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A vaginal queef of cum and blood, shortly after intercourse, when a man ejaculates in a female while she's on her period.
Man, I laughed so hard when I saw her red roman rocket
by janedoe1331 March 1, 2011
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