From Longman Dictionary of Contemporary Englishspot checkˌspot ˈcheck noun [countable] CHECK/MAKE SUREan examination of a few things or people from a group, to check whether everything is correct or satisfactoryspot check on spot checks on qualitymake/do/carry out etc spot checks We carry out spot checks on the vehicles before they leave the depot. —spot check verb [transitive] We spot check everyone’s work.
Examples from the Corpus
spot check• Customs officers make random spot checks.• Most drivers pass the spot check, not so this Volkswagen.From Longman Business Dictionaryspot checkˈspot check [countable] a check on particular things or people from a group, done without warningA spot check of 140 vehicles entering the car park revealed 18 people not wearing a seatbelt. → check 