The Urban Dictionary of Gamo Big Cat 1250 Air Rifle

https://wiki-book.win/index.php?title=A_Trip_Back_in_Time:_How_People_Talked_About_Gamo_Big_Cat_1250_20_Years_Ago

A gun is really a ranged weapon normally designed to pneumatically discharge projectiles[1] which might be stable (most guns) but can even be liquid (as in h2o guns/cannons and projected h2o disruptors) as well