Pellet Propeller is a term used to describe a type of gun that uses pellets as ammunition. Peashooter (10 letters) is a slang term for a BB gun, which is a type of airgun (5 letters) that fires small metal balls. Airgun (6 letters) and airrifle (8 letters) are both terms used to describe a type of gun that uses compressed air to fire pellets. All of these guns use pellets as their ammunition and are powered by either compressed air or a spring-loaded mechanism.