Lewis & Short

transvŏrātĭo, ōnis, f. [transvoro], a gulping or swallowing down, Cael. Aur. Acut. 1, 14, 113; 3, 6, 66; concr., the swallow, the throat, id. Tard. 1, 4, 109; 2, 11, 135; 2, 13, 176.