Marrow can mean

• bone marrow, the interior of long bones
• vegetable marrow, a variety of squash, or a large courgette (zucchini in US English)
• Marrow, a character in the X-Men comic series.
• Marrow (novel), Sci-Fi Book written by Robert Reed.
• The Marrow Controversy, occasioned by the republication of The Marrow of Modern Divinity in 1718.

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