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.
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.
A device for rendering citrus juice.
A tool used to scrape carbon deposit from the bowl of a pipe.
A tool for boring a hole wider.
A Stone Age prehistoric lithic stone tool, used in archeology nomenclature.