pith

nouns

soft spongelike central cylinder of the stems of most flowering plants

pith

is a type of (narrower)

the tissue of a plant

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"

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

is derived from

remove the pith from (a plant)

pith

is a type of (narrower)

dispose of

"Get rid of these old shoes!"; "The company got rid of all the dead wood"