21 (Noun)
Meaning
The cardinal number that is the sum of twenty and one.
Classification
Nouns denoting quantities and units of measure.
Examples
- The casino game Blackjack is also known as Twenty-One.
- She was 21 years old when she got married.
- The bus route 21 connects the city center with the suburbs.
- Twenty-One is a popular game show where contestants answer trivia questions.
- The hotel room number 21 was the only one available on the top floor.