bone marrow
noun/ˈbəʊn mærəʊ/
/ˈbəʊn mærəʊ/
(also marrow)
[uncountable]- a soft substance that fills the hollow parts of bones
- a bone marrow transplant
Oxford Collocations DictionaryBone marrow is used before these nouns:- donor
- transplant
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bone marrow