follow Dictionary.com

Why turkey has the same name as Turkey

safety valve

noun
1.
a device that, when actuated by a gas or vapor pressure above a predetermined level, opens and allows the gas or vapor to escape until its pressure is reduced to a pressure equal to or below that of the predetermined level.
Compare relief valve.
2.
a harmless outlet for emotion, tension, etc.
Origin
1805-1815
1805-15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for safety-valve

safety valve

noun
1.
a valve in a pressure vessel that allows fluid to escape when a predetermined level of pressure has been reached
2.
a harmless outlet for emotion, energy, tension, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source

Word of the Day

Difficulty index for safety valve

Few English speakers likely know this word

Word Value for safety

12
11
Scrabble Words With Friends

Quotes with safety-valve

Nearby words for safety-valve