Lewis & Short

torto, āre, v. freq. a. [torqueo], to torture, torment (ante- and post-class.; syn.: torqueo, crucio): ubi insilui in cochleatum eculeum, ibi tolutim tortor, Pompon. ap. Non. 105, 15, and 182, 5; Lucr. 3, 661; Arn. 3, 106; 1, 30.