clearance
clear.ance \'klir-*n(t)s\ n 1: an act or process of clearing : as 1a: the act of clearing a ship at the customhouse; also : the paper s showing that a ship has cleared 1b: the offsetting of checks and other claims among banks through a clearin ghouse 1c: AUTHORIZATION 1d: a sale to clear out stock 2: the distance by which one object clears another or the clear space betwe en them