twenty 2022.12.06 twentyとは 意味・定義・例文 Noun 名詞 1. the number 20, or ten more than 10 20 travel for twenty days ― take a twenty-day trip 2. ⦅-ies⦆ years, ages, or temperature between 20 and 29 20年代; 20歳代; 20度台