Thirteen (noun)

The cardinal number occurring after twelve and before fourteen.

Origin:

From middle english thrittene, from old english þrēotīene, from proto-germanic *þrētēhun.

Examples:

1. She turned thirteen last month.
2. There are thirteen stripes on the American flag.
3. The clock struck thirteen times at midnight.
4. There are thirteen players on a rugby team.
5. He finished the puzzle in thirteen minutes.