Lewis & Short

1. intrō, adv. [contr. from interō sc. loco].

  1. I. Inwardly, internally; on the inside: omnia sana faciet, intro quae dolitabunt, Cato, R. R. 157, 7: stare, Pall. 1, 40, 2; Cato, R. R. 157, 6; cf. Quint. 1, 5, 50.
  2. II. To the inside, within, in (class.): sequere intro me, amabo, into the house, Plaut. Truc. 3, 2, 19: intro ad nos venit, Ter. Eun. 5, 7, 2: intro ire, Plaut. Ps. 2, 2, 59: intro advenire, id. Truc. 1, 2, 7: abire, id. Ps. 1, 2, 35: intro est itum, Caes. B. C. 3, 26, 5: cur ad nos filiam tuam non intro vocari jubes? Cic. Verr. 2, 1, 26, § 66; cf.: prius quam intro vocarentur ad suffragium tribus, Liv. 10, 24 fin.; so, intro vocata centuria, id. 10, 13, 11: accipere, Plaut. Truc. 4, 2, 36.