Quota (noun)

1. A specified amount or proportion of something that is allocated or required.
2. A limit or restriction on the amount or number of something that can be produced, imported, or consumed.
3. A proportion of something, such as a particular group of people, that is required or allowed to be included in a situation.

Origin:

From the latin word quota meaning "a share" or "a portion".

Examples:

1. The company has a quota for sales this quarter.
2. The quota for imports of steel has been reached.
3. The government established a quota for women on the board of directors.
4. The quota for the number of refugees that can be accepted into the country.
5. The school has a quota for the number of students from underprivileged backgrounds.