Meaning of safety-valve | Babel Free

Definitions

1. Sometimes followed by off:
   transitive
2. To use a relief valve on (a container holding a gas or vapour) to relieve excessive pressure which has built up inside.
   transitive
3. To install a relief valve on (such a container) for that purpose.
   transitive
4. To use some mechanism to relieve (physical or emotional pressure or tension).
   figuratively, transitive

CEFR level