steam whistle steam vessel • steam-wrought · · · Info · Definitions · Synonyms · Characters · · steam whistle · · Text Common · · Latin · · Scripts 13 · · Length Definitions · · · (noun) a whistle in which the sound is produced by steam; usually attached to a steam boiler. · · Noun Definition 1 Synonyms · · · steamer · · Synonym 1 steam · · Synonym 2 steam clean · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D s latin small letter s U+0073 t latin small letter t U+0074 w latin small letter w U+0077