Sixty (adjective)

1. Being six times ten.
2. The number equivalent to the product of six and ten.
3. Denoting a quantity consisting of six times ten items.
4. Having the ordinal number six times ten.
5. A symbol for the number 60.

Origin:

Middle english, from old english sixtig (as a noun), from siex, sixt "six" + -tig "-ty".

Examples:

1. He will turn sixty next year.
2. She has lived in the city for sixty years.
3. The country has a population of over sixty million.
4. The company employs over sixty people.
5. He finished the race in under sixty seconds.