sixty · NUMBER /ˈsɪk.sti/
sixty
A2 the number 60
Dictionary examples:
fifty, sixty, seventy
There are sixty (people) coming to the wedding.
Learner example:
We were about sixty people, I can't remember their names. (Key English Test; A2; Swiss German)
(be) in your sixties/60s
B2 to be aged between 60 and 69
Dictionary example:
I started doing yoga in my sixties.
Learner example:
She is in her middle sixties, but still very active and lively. (First Certificate in English; B2; Dutch)
the sixties/'60s
B2 the years 1960 through 1969
Dictionary example:
I still love all that music from the sixties.
Learner example:
Another problem is the demoli[t]ion of old houses that took place during the sixties. (First Certificate in English; B2; Swedish)