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Definition of clearance:

  1. A certificate that a ship or vessel has been cleared at the customhouse; permission to sail.
  2. Clear or net profit.
  3. The act of clearing; as, to make a thorough clearance.
  4. The distance by which one object clears another, as the distance between the piston and cylinder head at the end of a stroke in a steam engine, or the least distance between the point of a cogwheel tooth and the bottom of a space between teeth of a wheel with which it engages.


permission, elimination, leeway, removal, dynamic headroom, margin, allowance, clearing, authorization, approval, purge, keep, room, riddance, headroom, consent, withdrawal, leave, eradication, removal, liquidation, headway, head, extent.

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