staple

noun

1.
(usually in the plural) a necessary commodity for which demand is constant
2.
a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn
3.
material suitable for manufacture or use or finishing
4.
a short U-shaped wire nail
5.
paper fastener consisting of a short length of U-shaped wire that can fasten papers together
Derived from:
staple