Englishfor English speakers
eleven
Determiner
—
(ordinal eleventh) Eleven is the number that is after ten and before twelve. It can also be written as 11.
Eleven trees stood on the hill.
eleven
Noun
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The number 11.
Eleven is a prime number.
—
A set of eleven things or persons.
Ocean's eleven are a group of thieves.
The girl looked young, no older than eleven.
thirty
Determiner
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(ordinal thirtieth) The number 30.
I had my first child when I was thirty years old.
thirty
Noun
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The number 30.
tens is thirty.