clearancerule
nounUK /ˈklɪərəns ruːl/
US /ˈklɪrəns ruːl/
A clearance rule is a rule that says how much empty space something needs.
The clearance rule says the box must stay two inches away from the wall.
OTHER MEANINGS
2. A rule about how far apart things must be kept for safety.
Workers followed the clearance rule to stay safe near the machines.
3. A rule that sets the minimum open space needed for something to fit or move.
The clearance rule made sure the truck could pass under the bridge.
4. A rule about removing or emptying something, such as clearing a space.
The clearance rule required everyone to empty the hallway before the event.