Defile

Defile may refer to:


 * To make dirty or impure
 * Defile (geography), in geography, a narrow pass or gorge between mountains
 * Defile (military), to march off in a line
 * The Defile, a pass between Suess Glacier and Nussbaum Riegel in Victoria Land, Antarctica
 * Battle of the Defile or Battle of the Pass, 731 battle between the Umayyads and Turks