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| mar·row [ márrō ] (plural mar·rows) |
noun |
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| Definition: |
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1. soft tissue in bones: soft red or yellow fatty tissue that fills the central cavities of bones. Red marrow is the site of blood cell production.
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2. essence: the essence, core, or key part of something
(
literary
)
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3. U.K. Same as marrow squash (sense 1) (sense 2)
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| [ Old English mærh< Indo-European] |
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to the marrow (of your bones) used to emphasize how intensely or deeply somebody is affected by something, especially the cold or an unpleasant experience
 I was chilled to the marrow.
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