The term 'ammo holder' can be broken down into three separate words: CLIP (4 letters), PEA (3 letters), and caps (4 letters). A CLIP is a device used to store multiple rounds of ammunition together as a unit, ready for insertion into the magazine or cylinder of a firearm. A PEA is a small, round, hard object used as ammunition in a shotgun or other firearm. Finally, caps are small metal containers filled with a volatile explosive compound that is used to ignite the propellant in a firearm. Together, these three components form an ammo holder, which is a device used to store and transport ammunition.