Lewis & Short

mastīgŏphŏrus, i, m., = μαστιγοφόρος, a whip-bearer, i. e. a beadle, policeman, an officer whose duty it was to maintain order at the public shows (post-class.), Prud. adv. Symm. 2, 516; Dig. 50, 4, 18, § 17; Arn. 2, 23.