Clearance

/klˈi‍əɹəns/

/ˈkɫɪɹəns/

Clearance

the distance by which one thing clears another; the space between them

official permission to proceed or to happen

2.1

a permit issued by an airport to allow an aircraft to land or take off

vertical space available to allow easy passage under something

synonyms : headroom

the act or process of removing obstacles or obstructions in order to create a clear, unobstructed pathway, space, or area

Examples

1. She found a brand-new smartphone for dirt cheap at the clearance sale.

2. Clearance worked well.

3. No, negative Four Seven Niner, clearance denied.

4. Clearance means cheaper.