What is the function of an alias in legal terms?

In legal terms, an alias refers to a name that a person is commonly known by, which may differ from their legal name. This can happen for various reasons, such as stage names for performers, nicknames, or even names used in a different cultural context. An alias allows for identification of individuals who might be more recognized by a particular name outside of their legal identity.

This usage is significant in legal proceedings, background checks, and law enforcement, where an individual may be known by multiple names. Understanding an alias helps in accurately linking people to various records or actions associated with them, ensuring clarity in legal documentation and communication.

The other options provided relate to distinct concepts. The designation of a person's legal name, the specification of a criminal charge, and the identification of a witness in a trial do not encompass the broader definition of an alias and its primary function.