Definition: The package consisting of the bullet, primer, and casing containing gunpowder; a round of ammunition.

Alright class, settle down, let’s take a peek, At a word we’ll learn, both simple and sleek. “Cartridges,” you see, it's quite a name, Let's break it down, play a learning game! The dictionary gives us the key, "A package of ammo, for all to see!" Think of a shooter, ready to fire, They need a round, fueled with desire. That 'package' you read, is perfectly true, It holds three parts – let’s look at ‘em through: The bullet , flying fast and bright, A projectile aiming for the light! The primer , tiny and small, Ignites the powder, standing tall! And the casing , a shell so neat, Holds all together, can’t be beat! Plus gunpowder inside, a powerful blast, Making sure the shot goes swift and fast. So "cartridges" means one round you see, A complete ammo package – perfectly free! Do you have any questions? Don't hesitate to ask, Let's make this learning truly last!