chopper
n.— «The AK-47 is known in new orleans as a “chopper” or a “chop.” as in b.g.‘s “chopper city in the ghetto” (1998), a platinum-selling album on cash money which gave the world the phrase “bling bling.”» —“Katrina: Chopper City” by Ned Sublette in New Orleans, La. Boing Boing Sept. 3, 2005. (source: Double-Tongued Dictionary)