- a cardinal number, ten times six.
- a symbol for this number, as 60 or LX.
- a set of this many persons or things.
- sixties, 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.
- like sixty, Informal. with great speed, ease, energy, or zest: Everyone was working like sixty to finish up before the holidays.
Origin of sixty
- the cardinal number that is the product of ten and sixSee also number (def. 1)
- a numeral, 60, LX, etc, representing sixty
- something represented by, representing, or consisting of 60 units
- amounting to sixtysixty soldiers
- (as pronoun)sixty are dead
Word Origin and History for like sixty
Old English sixtig, from siex (see six) + -tig (see -ty (1)). Cf. Old Norse sextugr, sextögr, sextigir, Old Frisian sextich, Middle Dutch sestig, Dutch zestig, Old High German sehszug, German sechzig. Phrase sixty-four dollar question is 1942, from radio quiz show where that was the top prize.