1
a
b
: the substance of the spinal cord
2
a
: the choicest of food
b
: the seat of animal vigor
c
: the inmost, best, or essential part : core
… personal liberty is the marrow of the American tradition.—
Clinton Rossiter
Clinton Rossiter3
chiefly British
: vegetable marrow
see also to the marrow
chiefly Scotland
: one of a pair
Examples of marrow in a Sentence
Recent Examples on the Web
Kevin Dolak, HollywoodReporter, 30 Dec. 2025
Bone marrow is either red or yellow, depending upon the preponderance of hematopoietic or fatty tissue.
—Scott Lafee, San Diego Union-Tribune, 23 Dec. 2025
My care was transferred to Memorial Sloan Kettering, one of the largest centers for bone-marrow transplants in the country.
—Tatiana Schlossberg, New Yorker, 22 Nov. 2025
The story of the bitter conflict ripping Loving County apart is inseparable from its history, one of hardship, survival, and ties to an unforgiving place that are born deep inside a person’s bones like marrow.
—Mitch Moxley, Rolling Stone, 27 Sep. 2025
See All Example Sentences for marrow
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Noun
Treatment required months of chemotherapy and a bone-marrow transplant.
—Kevin Dolak, HollywoodReporter, 30 Dec. 2025
Bone marrow is either red or yellow, depending upon the preponderance of hematopoietic or fatty tissue.
—Scott Lafee, San Diego Union-Tribune, 23 Dec. 2025
My care was transferred to Memorial Sloan Kettering, one of the largest centers for bone-marrow transplants in the country.
—Tatiana Schlossberg, New Yorker, 22 Nov. 2025
The story of the bitter conflict ripping Loving County apart is inseparable from its history, one of hardship, survival, and ties to an unforgiving place that are born deep inside a person’s bones like marrow.
—Mitch Moxley, Rolling Stone, 27 Sep. 2025
See All Example Sentences for marrow
Cite this Entry
“Marrow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/marrow. Accessed 1 Jan. 2026.
Copy CitationMedical Definition
marrow
noun
mar·row
ˈmar-(ˌ)ō, -ə(-w) 
1
2
: the substance of the spinal cord
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