DELATOR
delator (di-lay-t<<schwa>>r), n. [Latin] Roman law. 1. An informer. 2. An accuser; esp., a
person who made a practice of informing on and prosecuting others, esp. for fiscal offenses. • This
was at first encouraged, but later the informer became subject to the death penalty. Pl. delatores. [Blacks Law 8th]