1. the removal or clearing away of something
2. official permission or authorization to proceed
3. the space between two objects or the amount of space available

Examples

• The clearance of debris from the road took several hours.
• The pilot received clearance from air traffic control to land.
• Make sure there’s enough clearance between the ceiling and the tall furniture.
• The bridge has a clearance of 15 feet for boats passing underneath.
• She bought the dress at a clearance sale for half price.
• Security clearance is required to access classified documents.
• The truck couldn’t fit under the bridge due to insufficient clearance.