1
a
: a usually continuous central strand of spongy tissue in the stems of most vascular plants that probably functions chiefly in storage
b
: any of various loose spongy plant tissues that resemble true pith
c
: the soft or spongy interior of a part of the body
2
a
: the essential part : core
b
: substantial quality (as of meaning)
3
pithed; pithing; piths
1
a
: to kill (an animal) by piercing or severing the spinal cord
pith cattle
b
: to destroy the spinal cord or central nervous system of (an animal, such as a frog) usually by passing a wire or needle up and down the spinal canal
2
: to remove the pith from (a plant stem)
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Merriam-Webster unabridged
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