puffer machine
 n.— «Some passengers flying out of Baltimore-Washington International Airport will feel puffs of air scanning them for explosives as part of a test program that started yesterday. A trace portal system, referred to as a “puffer machine,” was set up at the security checkpoint for BWI’s Concourse D.» —“Airports try new bomb-detection device” by Marguerite Higgins Washington Times Feb. 9, 2005. (source: Double-Tongued Dictionary)

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