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Definition of marrow
marrow
/ˈmæɹ.oʊ/
mar · row
Plural:marrows
•Adjective:marrowy
marrow Lexical Profile
CEFR
B2
Grade
6
Tier
2
Usage
Top 10k
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Wordle Guess
• noun
1
The soft, fatty vascular tissue found in the central cavities of bones, responsible for producing blood cells.
Example
"Doctors performed a procedure to extract healthy stem cells from the donor's bone marrow."
2
The essential or most vital part of something; the innermost core or spirit.
Example
"The bitter, unrelenting winter cold seemed to pierce him right to the marrow."
3
British A large, elongated, green summer squash, closely related to the zucchini but typically harvested when fully mature.
Example
"She prepared a traditional dish of baked stuffed marrow seasoned with herbs from her garden."
Synonyms
View all synonyms for marrow Antonyms
View all antonyms for marrow• Rhymes for marrow
Word Origin & Etymology
From Old English 'mearg', descending from Proto-Germanic '*mazgą' and ultimately from the Proto-Indo-European root '*mosgʰos' meaning 'marrow' or 'brain'.
Cite this Entry
Wordmom. (2026). Definition of Marrow. In Wordmom Dictionary. Retrieved Oct 11, 2026, from https://wordmom.com/dictionary/marrow