- The soft spongy substance in the center of the stems of many plants and trees.
- (figuratively) The essential or vital part of an idea or theory or something else.
Etymology: Old English piía, plant pith, gist, from West Germanic pithan-; the verb meaning to kill by cutting or piercing the spinal cord is attested 1805.
- the of my idea is ...
Supplemental Details:Sponsor an extended definition for pith for as little as $10 per month. Click here to contact us.