marrow

¹ American  

[mar-oh, mar-uh] / ˈmær oʊ, ˈmær ə /

noun

Scot. and North England.

1. a partner; fellow worker.

2. a spouse; helpmate.

3. a companion; close friend.

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marrow ² American  

[mar-oh] / ˈmær oʊ /

noun

1. Anatomy. a soft, fatty, vascular tissue in the interior cavities of bones that is a major site of blood cell production.

2. the inmost or essential part.

   to pierce to the marrow of a problem.

3. strength or vitality.

   Fear took the marrow out of him.

4. rich and nutritious food.

5. Chiefly British. vegetable marrow.

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marrow ¹ British  

/ ˈmærəʊ, -rə /

noun

1. dialect a companion, esp a workmate

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marrow ² British  

/ ˈmærəʊ /

noun

1. the fatty network of connective tissue that fills the cavities of bones

2. the vital part; essence

3. vitality

4. rich food

5. short for vegetable marrow

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marrow Scientific  

/ măr′ō /

1. See bone marrow

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marrow Cultural  

1. The soft, specialized connective tissue that fills the cavities of bones. One kind of bone marrow is responsible for manufacturing red blood cells in the body.

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Other Word Forms

• marrowish adjective
• marrowless adjective
• marrowy adjective

Etymology

Origin of marrow¹

First recorded in 1400–50; late Middle English marwe, maro(we), “fellow worker, partner,” perhaps from Old Norse margr “many; friendly”

Origin of marrow¹

First recorded before 900; Middle English marw(e), marwa, Old English mearg, merg; cognate with Dutch merg, German Mark, Old Norse mergr

Example Sentences

The edited cells would then be returned to the patient, where they could settle into the bone marrow and begin producing healthier blood cells.

From Science Daily

Hematopoietic stem cells, often called blood stem cells, reside in the bone marrow and serve as the foundation of the body's blood and immune systems.

From Science Daily

Schlossberg described the treatments she received, including chemotherapy and a bone marrow transplant, but shared that doctors did not give her a good prognosis.

From BBC

Her voice pierces the sky and cuts through the marrow of modern apathy.

From Salon

Over the course of a few weeks, Marty’s bone marrow had flooded his blood with malignant cells.

From Los Angeles Times