ignition lock is a noun meaning "a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key". It carries one recorded sense.
a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key
Definitions, synonyms and semantic relations for ignition lock come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.