The outermost layer of the pericarp of fruits; the skin or epicarp
The albedo of a citrus fruit.
The essential or vital part; force; energy; importance.
The spinal cord; the marrow.
The soft, spongy substance in the center of the stems of many plants and trees.
The spongy interior substance of a feather or horn.
One divided by pi.
Power, strength, might.
To extract the pith from (a plant stem or tree).
To kill (especially cattle or laboratory animals) by cutting or piercing the spinal cord.
The ordinal form of the number pi.