(transitive) To extract the pith from (a plant stem or tree). / (transitive) To kill (especially cattle or laboratory animals) by cutting or piercing the spinal cord.

One divided by pi.

(botany) The soft, spongy substance in the center of the stems of many plants and trees. / The spongy interior substance of a feather or horn. / (anatomy) The spinal cord; the marrow.

The ordinal form of the number pi.

simple past tense and past participle of pith

Full of pith.

present participle of pith

Third-person singular simple present indicative form of pith

A lightweight helmet-shaped hat made of the pith of the sola or shola (Indian spongewood) plant covered with white cotton and faced with green cloth. Also known as a "sola topi", it was originally used by the British army in India in the 19th century, later used more widely.

plural of pith helmet