bone marrow Bonellia • bonemeal · · · Info · Definitions · Synonyms · Characters · · bone marrow · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) the fatty network of connective tissue that fills the cavities of bones. Synonyms: marrow, bone marrow. · · Noun Definition 1 (noun) very tender and very nutritious tissue from marrowbones. Synonyms: marrow, bone marrow. · · Noun Definition 2 Synonyms · · · marrow · · Synonym 1 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 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 w latin small letter w U+0077