WordWeb Online

1. Soft spongelike central cylinder of the stems of most flowering plants
    
2. The choicest or most essential or most vital part of some idea or experience
   - kernel, substance, core, center [US], centre [Brit, Cdn], essence, gist, heart, heart and soul, inwardness, marrow, meat, nub, sum, nitty-gritty

1. Remove the pith from (a plant)

Derived forms: pithing, pithed, piths

See also: pithy

Type of: cognitive content, content, get rid of, mental object, plant tissue, remove

Encyclopedia: Pith