rhomboid muscle rhomboid minor muscle • rhomboid-ovate · · · Info · Definitions · Synonyms · Characters · · rhomboid muscle · · Text Common · · Latin · · Scripts 15 · · Length 4 · · Syllables Definitions · · · (noun) any of several muscles of the upper back that help move the shoulder blade. Synonyms: rhomboid, rhomboid muscle. · · Noun Definition 1 Synonyms · · · rhomboid · · Synonym 1 Characters · · space U+0020 b latin small letter b U+0062 c latin small letter c U+0063 d latin small letter d U+0064 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 o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075