wheel clamp
From Longman Dictionary of Contemporary EnglishRelated topics: Motor vehicleswheel clampˈwheel clamp (also clamp) noun [countable] SCPTTCa metal object that is fastened to the wheel of an illegally parked car so that it cannot be driven away SYN denver boot American English —wheel-clamp verb [transitive]Examples from the Corpuswheel clamp• The other suggestions included statutory licensing of wheel clamp operators and statutory licensing of land on which wheel clamps may be used.