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.
A type of fruit in which the often edible flesh arises from the swollen base of the flower and not from the carpels.
A ball of silver or other metal, filled with hot water and used by a Roman Catholic priest in cold weather to warm his hands during the service.