steam boiler steamboat ratchet • steam boiler insurance · · · Info · Definitions · Synonyms · Characters · · steam boiler · · Text Common · · Latin · · Scripts 12 · · Length Definitions · · · (noun) sealed vessel where water is converted to steam. Synonyms: 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 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074