Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dĕ-ambŭlo, āvi, ātum, l, v. n., to walk abroad, walk much, to take a walk, to promenade (rare): aegrotus saliat decies et deambulet, Cato R. R. 127 fin.; 156, 4: eamus deambulatum, id. ap. Cic. de Or. 2, 63, 256; so in the supine, * Ter. Heaut. 3, 3, 26; deambulanti in litore, Suet. Aug. 96; 83; Vulg. Gen. 3, 8; id. Dan. 13, 7 (ambulatum is the true reading, Cic. Leg. 1, 3, 14).