Meaning of the word twenty-one in English

What does twenty-one mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

twenty-one

US /ˌtwen.t̬iˈwʌn/
UK /ˌtwen.tiˈwʌn/

Number

the number equivalent to the sum of twenty and one; one more than twenty

Example:
She turned twenty-one last month.
There are twenty-one students in the class.