0 twenty-first [ordinal number] 21st written as a word Example: the twenty-first century Longman Dictionary of Contemporary English twenty-first ˌtwenty-ˈfirst BrE AmE noun [countable usually singular] your twenty-first ↑birthday or the celebration you have for it Oxford Advanced Learner's Dictionary twenty-first ˌtwenty-ˈfirst [twenty-first] noun singular (informal, especially BrE) a person's 21st birthday and the celebrations for this occasion • She's having a party on her twenty-first. • His parents gave him a car for his twenty-first. Cambridge Advanced Learner's Dictionary Cambridge Advanced Learner's Dictionary - 4th Edition ˌ twenty- ˈ first / ˌtwen.tiˈfɜːst / / -t̬iˈfɝːst / ordinal number 21st written as a word: the twenty-first century American EnglishBritish Englishordinal numbersA2 (Elementary)twenty-firstadjectiveShortened URL: http://lngt.co/twenty-first1en
