/əˈpɪərəns proʊ hæk vaɪs/ – Adjective
Definition: Được xuất hiện trong vụ án một lần duy nhất.
A more thorough explanation: where a lawyer who is not admitted to practice in a certain jurisdiction is granted the right to conduct a particular case
Example: The Court has the discretion to admit the appearance pro hac vice of out-of-state counsel.