Lewis & Short

fustīgo, āre, v. a. [fustis], to cudgel to death (v. the foll. art.), Cod. Th. 9, 29, 2; 9, 34, 1; cf.: ξυλοκοπῶ, τύπτω τῷ ξύλῳ, Gloss. Philox.: ‡ fustigatus βακλισθείς, ib.