escape valve

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See: loophole
References in periodicals archive ?
At the other end of carnival interpreters, there are those who think that carnival is an escape valve that lets revelers work off steam which never accumulates momentum for change.
Immigration is becoming an escape valve for many Oaxaca residents.
In 1997, at the urging of NRLC and other groups, Congress created an escape valve.
In a society that demanded propriety and the repression of base instincts, horror stories provided a necessary escape valve.
But it does go a long way to explain what life is like for them - and how they need an escape valve to let off steam.
The Maori, inspired by the loose forward pair of Jonno Gibbes and Marty Holah, closed down every escape valve available to the Lions and piled on the pressure.
The stuck Qi builds up, like a pressure cooker, and eventually needs an escape valve.
They dodge through Idaho Springs trying to beat the clock, or dash down off-ramps onto back roads through Georgetown looking for an escape valve.
Only individual brilliance - a meaty Mutu volley, a low Lampard driller - appeared to offer Chelsea an early escape valve from the pressure generated by an Everton team in no mood to party early.
Was it to follow the strictures of Communist cultural policy, and in particular the doctrine of 'Socialist realism', or was it an escape valve for the intellectual classes, a brief few hours of freedom of expression in a lifetime of conformity?
With much of the play congested in the middle of the field - you can expect more of the same in the derby - Rooney acted as Everton's escape valve, the figure likely to unlock Blackburn's almost equally edgy backline.