Lewis & Short

mŏrātor, ōris, m. [moror].

  1. I. A delayer, loiterer, malingerer: unus publici commodi, Liv. 2, 44; Curt. 4, 10, 10 (but moratorum, Liv. 21, 47, 3, and 24, 41, 5, is from morati; v. moror).
  2. II. A talker against time, a sort of advocate who spoke only to gain time while his principal rested and refreshed himself, Cic. Div. in Caecil. 15, 49.
  3. III. In the races, persons who strove to embarrass and delay the runners, for the amusement of the crowd, Inscr. Orell. 2597.