the number equivalent to the product of two and ten; ten less than thirty; 20:twenty or thirty years agotwenty miles awaytwenty of us stood and waiteda twenty-foot aerial (Roman numeral: xx or XX)
(twenties) the numbers from twenty to twenty-nine, especially the years of a century or of a person’s life:he’s in his late twentiescars built in the Twenties
twenty years old:he’s about twenty
twenty miles an hour.
a size of garment or other merchandise denoted by twenty.