Definition of 'marrow'

Noun

1. the fatty network of connective tissue that fills the cavities of bones
      Synonyms: bone marrow
2. any of various squash plants grown for their elongated fruit with smooth dark green skin and whitish flesh
      Synonyms: marrow squash vegetable marrow
3. very tender and very nutritious tissue from marrowbones
      Synonyms: bone marrow
4. large elongated squash with creamy to deep green skins
      Synonyms: vegetable marrow
5. the choicest or most essential or most vital part of some idea or experience; "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story"
      Synonyms: kernel substance core center essence gist heart heart and soul inwardness meat nub pith sum nitty-gritty

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