The act of clearing or something (such as a space) cleared. • The distance between two moving objects, especially between parts of a machine • The height or width of a tunnel, bridge or other passage, or the distance between a vehicle and the walls or roof of such passage; a gap, headroom. • A permission for a vehicle to proceed, or for a person to travel. • A permission to have access to sensitive or secret documents or other information. • A permission to use something, usually intellectual property, that is legally, but not otherwise, protected. • A sale of merchandise, especially at significantly reduced prices, usually in order to make room for new merchandise or updated versions of the same merchandise; sometimes as a closeout. • The settlement of transactions involving securities or means of payment such as checks by means of a clearing house. • The removal of harmful substances from the blood; renal clearance. • The act of potting all the remaining balls on a table at one visit. • The act of kicking a ball away from the goal one is defending. • Removal of pieces from a rank, file or diagonal so that a bishop, rook or queen is free to move along it. • Clear or net profit. • The first disposal in a chain that leaves the area of a stoppage, or a disposal that leaves the area of a stoppage itself. • The act of leaving the area of a stoppage.