In law, a minor is a person under a certain age—usually the age of majority—which legally demarcates childhood from adulthood. The age of majority depends upon jurisdiction and application, but is generally 18. Minor may also be used in contexts unconnected to the overall age of majority. For example, the drinking age or casino gambling age in the United States is 21, and people below this age are sometimes called minors even if they are older than 18.