clearance

noun

1. 1

   The act of clearing or something (such as a space) cleared

2. 2

   The distance between two moving objects, especially between parts of a machine

3. 3

   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.

4. 4

   A permission for a vehicle to proceed, or for a person to travel.

   “He got clearance to travel to America, even though he had previous links to terrorists”

5. 5

   A permission to have access to sensitive or secret documents or other information.

6. 6

   A permission to use something, usually intellectual property, that is legally, but not otherwise, protected.

7. 7

   (retail) A sale of merchandise, especially at significantly reduced prices in order to make room for new merchandise or updated versions of the same merchandise.

8. 8

   The settlement of transactions involving securities or means of payment such as checks by means of a clearing house.

9. 9

   The removal of harmful substances from the blood; renal clearance.

10. 10

    The act of potting all the remaining balls on a table at one visit.

11. 11

    The act of kicking a ball away from the goal one is defending.

12. 12

    Removal of pieces from a rank, file or diagonal so that a bishop, rook or queen is free to move along it.

13. 13

    Clear or net profit.

14. 14

    The first disposal in a chain that leaves the area of a stoppage, or a disposal that leaves the area of a stoppage itself.

15. 15

    The act of leaving the area of a stoppage.