From Longman Dictionary of Contemporary Englishmetal detectorˈmetal deˌtector noun [countable] 1 TDLOa machine used to find pieces of metal that are buried under the ground2 SCPTTAa special frame that you walk through at an airport, used to check for weapons made of metal
Examples from the Corpus
metal detector• Security was tight; every guest was searched and walked through a metal detector upon arrival.• He was holding the metal detector. 