TWENTY-FIRST Meaning of TWENTY-FIRST in English twenty-first BrE AmE ˌtwent i ˈfɜːst ◂ ˌtwen- AmE \ ˌtwen t̬ i ˈfɝːst ◂▷ twenty-first|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012