drug mule

slang Someone who is paid or forced to transport illegal drugs between locations. Several of the drug mules caught by airport security were victims of human trafficking who had been forced to smuggle drugs across international borders. In this poverty-ridden country, some of the most lucrative—and dangerous—work is being a drug mule. Hey, if you're looking for work, I'm pretty sure there's some need for a drug mule—but you didn't hear it from me.