The internal tissue of a plant.
The medulla oblongata.
The soft inner part of something, especially the pith of a fruit.
The inner substance of various organs and structures, especially the marrow of bones.
The soft, spongy substance in the center of the stems of many plants and trees.
The essential or vital part; force; energy; importance.
The spinal cord; the marrow.
The albedo of a citrus fruit.
The spongy interior substance of a feather or horn.
One divided by pi.
Power, strength, might.
The ordinal form of the number pi.
To extract the pith from (a plant stem or tree).
To kill (especially cattle or laboratory animals) by cutting or piercing the spinal cord.