the act of clearing.

the distance between two objects; an amount of clear space

The bridge allowed a clearance of 37 feet at mean high water.

a formal authorization permitting access to classified information, documents, etc.

Also called clearance sale. the disposal of merchandise at reduced prices to make room for new goods

He bought the coat for half price at a clearance.

a clear space; a clearing

The house stood in a clearance among the trees.

Banking . an exchange of checks and other commercial paper drawn on members of a clearinghouse, usually effected at a daily meeting of the members.

Machinery . a space between two moving parts, left to avoid clashing or to permit relatively free motion.

the angle between a face of a cutting tool, as a lathe tool, and the work.

Nautical .

the clearing of a ship at a port.

Also called clearance papers. the official papers certifying this.

Medicine/Medical . a test of the excretory function of the kidneys based on the volume of blood that is cleared of a specific substance per minute by renal excretion.

noun

denial , grounding , refusal , veto

noun

approval , authorization , consent , endorsement , go-ahead * , green light * , leave , okay , sanction , say-so , allowance , assart , defoliated area , empty space , expanse , gap , headroom , margin , opening , open space , eradication , liquidation , purge , removal , riddance , permission , sale