metal detector

American  

noun

1. an electronic device for detecting the presence of metal objects, as one used as a portable sweeping unit or one emplaced in an archway at an airport terminal to detect concealed weapons, explosives, etc.

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metal detector British  

noun

1. a device that gives an audible or visual signal when its search head comes close to a metallic object embedded in food, buried in the ground, etc

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Example Sentences

Sometimes he’s just out there for fun, but often he’s wielding his submersible Excalibur II metal detector to salvage someone’s destination wedding.

From The Wall Street Journal

In the hours before and after the concert, access to the square - a popular, open space - will be controlled through 31 entry points fitted with metal detectors.

From BBC

There was also the sound of a generator, which would require a permit, a check-in table, a metal detector and a temporary wall with branding, Sterling said.

From Los Angeles Times

Visitors are searched, and cars and bags are swept by dogs and metal detectors.

From BBC

After passing through metal detectors, groups of about 750 people were being allowed into the hill town basilica's lower church every half an hour starting from 7:00am.

From Barron's