olemus
sõltub kontekstist, eelkõige
puudutab rahandust või tolliprotseduure

Wiktionary:
4. a permission for a vehicle to proceed, or for a person to travel
The plane got clearance from air traffic control, and we were off.
He got clearance to travel to America, even though he had previous links to terrorists
5. a permission to have access to sensitive or secret documents or other information
6. a permission to use something, usually intellectual property, that is legally, but not otherwise, protected
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. (banking, finance) the settlement of transactions involving securities or means of payment such as checks by means of a clearing house

näiteid
clearance bill-- tollisertifikaat, tollilõivu tasumise tõend
clearance charge -- tollilõiv, toll, tollimaks
clearance limit -- loa piir
clearance loan -- ühepäevalaen
clearance note: tollisertifikaat, tollilõivu tasumise tõend
clearance papers -- 1. tollidokumendid 2.stardiluba
clearance sale -- tühjendus-/lõpetusmüük, odav väljamüük
custom clearance -- tolliprotseduur, tollivormistus
fault clearance -- rikke eraldamine
inward clearance -- laeva sissesõidu klaarimine
par clearance -- pariteetne arveldus tšekkidega
sale clearance -- tühjendusmüük
taxi clearance -- ruleerimisluba

vt ka
- arveldama
- tühjendama