relief valve relief ship • relief well · · · Info · Definitions · Synonyms · Characters · · relief valve · · Text Common · · Latin · · Scripts 12 · · Length Definitions · · · (noun) a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level. Synonyms: safety valve, escape valve, escape cock, escape. · · Noun Definition 1 Synonyms · · · relief · · Synonym 1 alleviation · · Synonym 2 assuagement · · Synonym 3 ease · · Synonym 4 stand-in · · Synonym 5 substitute · · Synonym 6 reliever · · Synonym 7 backup · · Synonym 8 backup man · · Synonym 9 fill-in · · Synonym 10 succor · · Synonym 11 succour · · Synonym 12 ministration · · Synonym 13 respite · · Synonym 14 rest · · Synonym 15 rest period · · Synonym 16 easing · · Synonym 17 moderation · · Synonym 18 easement · · Synonym 19 relievo · · Synonym 20 rilievo · · Synonym 21 embossment · · Synonym 22 sculptural relief · · Synonym 23 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 v latin small letter v U+0076