clearance-n; 2 Senses

Sense Number 1: the distance by which one thing avoids hitting another.

Commentary: CLEARANCE[+distance]

Examples:
I don't think we have enough clearance.
The truck had only inches of clearance under the bridge.

Mappings:
PropBank: NM
WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: Permission to do something.

Commentary: CLEARANCE[+event]

Examples:
The plane was given clearance to land.
I was granted clearance to spend the money.

Mappings:
PropBank: clearance.01
WordNet 3.0 Sense Numbers: 3