perambulation (n.)

mid-15c., from Anglo-Latin (c. 1300) and Anglo-French perambulacion, from Medieval Latin perambulationem (nominative perambulatio), noun of action from past participle stem of Latin perambulare "to walk through, go through, ramble through," from per "through" (from PIE root *per- (1) "forward," hence "through") + ambulare "to walk, go about" (see amble (v.)).