What is marrow?

More definitions of "marrow":

• (noun): The fatty network of connective tissue that fills the cavities of bones.
  Synonyms: bone marrow

• (noun): The choicest or most essential or most vital part of some idea or experience.
  Synonyms: kernel, substance, core, center, essence, gist, heart, heart and soul, inwardness, meat, nub, pith, sum, nitty-gritty

• (noun): Very tender and very nutritious tissue from marrowbones.
  Synonyms: bone marrow

• (noun): Large elongated squash with creamy to deep green skins.
  Synonyms: vegetable marrow

Famous quotes containing the word marrow:

“Death is someone you see very clearly with eyes in the center of your heart: eyes that see not by reacting to light, but by reacting to a kind of a chill from within the marrow of your own life.”
—Thomas Merton (1915–1968)

“But the effort, the effort! And as the marrow is eaten out of a man’s bones and the soul out of his belly, contending with the strange rapacity of savage life, the lower stage of creation, he cannot make the effort any more.”
—D.H. (David Herbert)

““A young man in the dark am I
But a wild old man in the light
That can make a cat laugh, or
Can touch by mother wit
Things hid in their marrow bones
From time long passed away....””
—William Butler Yeats (1865–1939)