Lewis & Short

ŏb-ambŭlo, āvi, ātum, 1, v. n. and

  1. I. a., to walk before or near any thing, to go past (not in Cic. or Cæs.); constr. with dat. or acc.: obambulare adversum alios ambulare, et quasi ambulanti sese opponere, Paul. ex Fest. p. 187 Müll.
          1. (α) With dat.: obambulare muris, Liv. 36, 34, 4: gymnasio, Suet. Tib. 11: nec (lupus) gregibus nocturnus obambulat, walk or prowl about, Verg. G. 3, 538.
          2. (β) With acc.: urbem, Plaut. Merc. 4, 4, 20: totam fremebundus obambulat Aetnam, Ov. M. 14, 188: gymnasia, Suet. Tib. 11 (al. gymnasio).
  2. II. Transf., in gen., to go or walk about, wander: neu noctu irem obambulatum, Plaut. Trin. 2, 2, 34: ante vallum, Liv. 25, 39: sermone imperfecto, Quint. 11, 3, 121: in herbis, Ov. M. 2, 851: praeter os, Plaut. Poen. prol. 19.
    Absol.: cum solus obambulet, Ov. Tr. 2, 459; Suet. Tib. 25.