soft spongelike central cylinder of the stems of most flowering plants
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"
remove the pith from (a plant)
- The stem is hollow with pith cavity.
- Both the rubber and the pith ball are negatively charged.
- The pith of that theory is serving for people.
- That was the pith of his argument.
The pith of the argument.出自：New Scientist
The very pith and essence of our relationship.出自： B. Mason