interpleader

Noun

 * 1)  One who makes an interplea.
 * 2)  Motion for a third party to enter into a lawsuit in process because a matter is being adjudicated in which they have an interest.
 * 3)  Process by which a third party asks a court to determine which of two rival claims is to be honored by the third party.

Translations

 * Spanish: peticionario, solicitante