In English, it is most often used to refer to a female friend, especially one who is close and trusted.
However, "amica" can also have a more specific meaning in certain contexts:
* In legal contexts, "amica curiae" (friend of the court) refers to a person or organization that provides information or arguments to a court, but is not directly involved in the case.
* In some historical contexts, "amica" could refer to a mistress or concubine. This usage is less common nowadays.
Therefore, the meaning of "amica" depends on the context in which it is used. But generally, it refers to a close female friend.