noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˈbəʊn ˌmæɹəʊ/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ˈboʊn ˌmɛɚoʊ/
1
noun
Meaning 1
The fatty vascular tissue that fills the cavities of bones, being the place where new blood cells are produced.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Topics: anatomy, medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
the fatty network of connective tissue that fills the cavities of bones
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: marrow
Antonyms: none provided
Broader terms: connective tissue
Narrower terms: red marrow, red bone marrow, yellow marrow, yellow bone marrow
3
noun
Meaning 3
very tender and very nutritious tissue from marrowbones
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.