safety valveEnglishOxford Dictionary of Englishsafety valve /ˈseɪfti ˌvalv / ▸ noun a valve that opens automatically to relieve excessive pressure. ▪ a means of giving harmless vent to feelings of tension or stress: laughter may be a safety valve that reduces tension.
EnglishOxford Dictionary of EnglishEnglishOxford Dictionary of English
EnglishOxford Dictionary of English