Eleven (noun)

The number eleven, equivalent to ten plus one.

Origin:

From middle english enleven, elleovene, ellevene, from old english endleofan, from proto-germanic *ainalifan (“one left”), from *ainaz (“one”) + *lifaną (“to remain”), equivalent to one +‎ -teen.

Examples:

1. She only scored eleven points in the game.
2. I will meet you at eleven o'clock.
3. The movie starts at eleven thirty.
4. The store is open from nine to eleven.
5. The package was delivered on the eleventh of the month.