English

Definition of bone marrow noun from the Oxford Advanced Learner's Dictionary

 

bone marrow

 noun
noun
BrE BrE//ˈbəʊn mærəʊ//
 
; NAmE NAmE//ˈboʊn mæroʊ//
 
(also marrow) [uncountable]
 
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a soft substance that fills the hollow parts of bones a bone marrow transplant
See the Oxford Advanced American Dictionary entry: bone marrow