pith

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pith

(pith),
1. The center of a hair.
2. The spinal cord and medulla oblongata.
3. To pierce the medulla of an animal with a sharp instrument introduced at the base of the skull.
[A.S. pitha]

pith

(pĭth)
n.
a. The soft inner substance of a feather or hair.
b. The spinal cord.
tr.v. pithed, pithing, piths
To sever or destroy the spinal cord of, usually by inserting a needle into the vertebral canal.

pith

(pith)
1. The center of a hair.
2. The spinal cord and medulla oblongata.
3. To pierce the medulla of an animal with a sharp instrument introduced at the base of the skull.
[A.S. pitha]

pith

or

medulla

the core of a DICOTYLEDON stem, containing PARENCHYMA cells that have a storage function.
References in classic literature ?
It is the effect of anything completely and consummately artificial, in human shape, that the person impresses us as an unreality and as having hardly pith enough to cast a shadow upon the floor.
His eyes took in my large pith helmet, my khaki jacket, and bandoleers of cartridges, the two revolvers swinging at my hips, the large rifle resting against my body.
The axe struck deep into the very pith; the Tree fell to the earth with a sigh; he felt a pang--it was like a swoon; he could not think of happiness, for he was sorrowful at being separated from his home, from the place where he had sprung up.