sixty

 
Pronunciation: /ˈsɪksti/

cardinal number (plural sixties)

  • the number equivalent to the product of six and ten; ten more than fifty; 60: a crew of sixty sixty bedrooms sixty per cent of the children (Roman numeral: lx or LX)
  • (sixties) the numbers from sixty to sixty-nine, especially the years of a century or of a person’s life: Morris was in his early sixties the flower children of the sixties
  • sixty miles an hour: they were doing sixty
  • sixty years old: he retired at sixty
  • a size of garment or other merchandise denoted by sixty.

Derivatives

sixtieth

ordinal number

sixtyfold

adjective & adverb

Origin:

Old English siextig (see six, -ty2)