spring mattress spring lock • spring mushroom · · · Info · Definitions · Characters · · spring mattress · · Text Common · · Latin · · Scripts 15 · · Length 3 · · Syllables Definitions · · · (noun) a mattress containing springs in a rigid frame. Synonyms: spring mattress. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074