Tyrannus [Tīrăn'nus]—absolute, sovereign or a tyrant (from Tyrus, meaning strength). A teacher in a philosophical school in Ephesus in which Paul disputed daily for two years (Acts 19:9). Instructions in the Law were given in this school by Jewish scribes. Ellicott suggests that “Tyrannus was also a physician, and that, as such, he may have known Luke, or, possibly may have been among the Jews whom the decree of Claudius (Acts 18:2) had driven from Rome. An unconverted teacher of philosophy or rhetoric was not likely to have lent his class-room to a preacher of the new faith.”