Definition of pith

noun (n)

• soft spongelike central cylinder of the stems of most flowering plants (noun.plant)

  source: wordnet30
• the choicest or most essential or most vital part of some idea or experience (noun.cognition)

  Synonym: center, centre, core, essence, gist, heart, heart and soul, inwardness, kernel, marrow, meat, nitty-gritty, nub, substance, sum
  

  source: wordnet30
• The soft spongy substance in the center of the stems of many plants and trees, especially those of the dicotyledonous or exogenous classes. It consists of cellular tissue. (noun)

  source: webster1913

verb (v)

• remove the pith from (a plant) (verb.possession)

  source: wordnet30
• To destroy the central nervous system of (an animal, as a frog), as by passing a stout wire or needle up and down the vertebral canal. (verb)

  source: webster1913

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