Shotgun
From Wikipedia, a free encyclopedia written in simple English for easy reading.
Shotgun - A smooth bore firearm capable of propelling multiple projectiles. To operate a shotgun, propellent is igniged by a primer, or another ignition device. The expanding gas push on a wad (which holds the projectiles togeter until they leave the end of the barrel). The group of projectiles exits the barrel and fly to the intended target.
A shotgun will contain one of more barrels. These barrels are normally mounted in a side by side or over under configuraiton.