Pellet (noun)

1. A small, round or cylindrical piece of compressed material, typically made of wood or other organic matter.
2. A small ball or cylinder of compressed material, used as a projectile in a pellet gun or as a form of medication or feed.

Origin:

Middle english: from old french pelote "little ball", from latin pila "ball".

Examples:

1. The pellets are made from compressed sawdust.
2. The pellet was fired from a pellet gun.
3. The fish were fed with pellets.
4. The medicine was delivered in the form of a pellet.
5. The pellets are used as fuel for pellet stoves.