walker
n.— «The cocaine arrived on October 8 in the most humble of vehicles: a briefcase, carried as hand luggage on a flight from Argentina by a man described in court documents as the “walker”—or, in popular parlance, the drug mule.» —“Too much baggage” by Neil McMahon Sydney Morning Herald (Australia) May 13, 2005. (source: Double-Tongued Dictionary)
Further reading
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