Six″ty, n.; pl.Sixties (�). 1. The sum of six times ten; sixty units or objects.
2. A symbol representing sixty units, as 60, lx., or LX.
Webster's Dictionary 1913
Six″ty, n.; pl.Sixties (�). 1. The sum of six times ten; sixty units or objects.
2. A symbol representing sixty units, as 60, lx., or LX.