school tie
From Longman Dictionary of Contemporary EnglishRelated topics: School, Clothesschool tieˌschool ˈtie noun [countable] 1 SESDCCa special tie with a particular colour or pattern that children wear at some schools in Britain2 → the old school tieExamples from the Corpusschool tie• The starter pack included a free school tie, stationery set and complimentary sports insurance.• He comes across as being vaguely aristocratic, patrician, old school tie.