Synonym: bone marrow, center, core, essence, gist, heart, heart and soul, inwardness, kernel, marrow squash, meat, nitty-gritty, nub, pith, substance, sum, vegetable marrow. Similar words: arrow, barrow, narrow, harrow, sparrow, narrowness, harrowing, wheelbarrow. Meaning: ['mærəʊ] 
n. 1. the fatty network of connective tissue that fills the cavities of bones 2. any of various squash plants grown for their elongated fruit with smooth dark green skin and whitish flesh 3. very tender and very nutritious tissue from marrowbones 4. large elongated squash with creamy to deep green skins 5. the choicest or most essential or most vital part of some idea or experience.
n. 1. the fatty network of connective tissue that fills the cavities of bones 2. any of various squash plants grown for their elongated fruit with smooth dark green skin and whitish flesh 3. very tender and very nutritious tissue from marrowbones 4. large elongated squash with creamy to deep green skins 5. the choicest or most essential or most vital part of some idea or experience. 
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1) I felt frozen to the marrow.
2) The regret penetrated to his marrow.
3) We're getting into the marrow of the film.
4) The dreadful sight chilled her to the marrow.
5) His threat chilled her to the marrow.
6) A chill pierced into the marrow.
7) Red blood cells are produced in the bone marrow.
8) She was shocked to the marrow by his actions.
9) Our bone marrow contains fat in the form of small globules.
10) A bone marrow aspirate showed 64% blast cells.
11) Criticized to his very marrow,(http://sentencedict.com/marrow.html) I knew that Pierluigi would be deeply offended.
12) He received two blood transfusions after a bone marrow transplant and wanted the name so he could sue the donor.
13) His only chance of survival was a bone marrow transplant.
14) On May 29, a bone marrow test confirmed the worst.
15) In adults, normal bone marrow contains largely fat and therefore has a high signal.
16) It was so cold that he felt frozen to the marrow.
17) There are 2,000 children worldwide who need a bone marrow transplant.
18) Come by the fire you must be chilled to the marrow!
19) This is a film that will chill you to the marrow.
20) Five of the six patients who had not undergone operation were staged by computed tomography and bone marrow biopsy.
21) The treatment was first tested in patients who received transplants of bone marrow.
22) There was dark matter oozing slowly from the centre of the bone which, Crossley concluded with revulsion(sentencedict.com), was marrow.
23) She was bending over a basket of freshly picked marrow flowers, arranging them to her satisfaction.
24) The thought made him flush hot with embarrassment even though chilled to the marrow.
25) All the patients had multiple myeloma which affects bone marrow.
26) In two-thirds of such patients, white blood cells known as T-Lymphocytes that are produced by the marrow attack their fresh surroundings.
27) Karen Hurst helped a 10-year-old a cancer sufferer back to health by donating life-giving marrow last year.
28) The Anthony Nolan Research Centre manages the world's largest register of potential bone marrow donors.
29) D' ya think the City Hospital would do bone marrow transplant?
30) A blood test will show if you are a possible bone marrow donor.
More similar words: arrow, barrow, narrow, harrow, sparrow, narrowness, harrowing, wheelbarrow, narrow escape, a narrow escape, borrow, sorrow, morrow, furrow, burrow, parrot, carrot, arroyo, tomorrow, borrowed, furrowed, garrote, sorrowing, sorrowful, arrogant, arrogate, carrousel, arrogance, sorrowfully, marry.