Lewis & Short

adventor, ōris, m. [advenio], one that arrives, a guest, visitor.

  1. I. In gen., Plaut. As. 2, 2, 92.
    So in two inscriptions, Orell. 2287, and Grut. 444, 8; cf. Barth. Adv. p. 1487.
  2. II. Esp., one that comes to a pothouse, visitor, customer, Plaut. Truc. 1, 2, 2: adventores meos non incuses, id. ib. 2, 7, 55, etc.; so App. M. 10, p. 248.