- a cardinal number, ten times six.
- a symbol for this number, as 60 or LX.
- a set of this many persons or things.
- the numbers, years, degrees, or the like, from 60 through 69, as in referring to numbered streets, indicating the years of a lifetime or of a century, or noting degrees of temperature: Her grandfather is in his late sixties. The temperature is in the low sixties.
- amounting to 60 in number.
- with great speed, ease, energy, or zest: Everyone was working like sixty to finish up before the holidays.
- the cardinal number that is the product of ten and six
- a numeral, 60, LX, etc, representing sixty
- something represented by, representing, or consisting of 60 units
- amounting to sixty
- (as pronoun)
