radar detector

noun
plural radar detectors

Definition of radar detector

1 : a device designed to alert the operator of a vehicle when it has been targeted by a radar beam (as from a police officer's radar gun) After fastening a radar detector to the windshield, he slaloms through traffic at illegal speeds for the seven-mile trip to Chrysler's Styling Dome …— Alex Taylor III He chuckled about the radar detector in his big station wagon … saying he never drove faster than 60 anyway.— Stephan Wilkinson
2 : radar gun The officer's radar detector recorded the vehicle speed between 55 and 60 mph, with the speed reaching 70 mph at one point on the 55 mph-limit roadway.— Robin Baumgarn

First Known Use of radar detector

1960, in the meaning defined at sense 1

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The first known use of radar detector was in 1960

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