muzzle discipline
The practice of keeping a firearm's muzzle pointed safely (that is, away from other people and things) at all times. This awful tragedy could have been prevented if the shooter had exhibited proper muzzle discipline.
put a muzzle on it
informal To stop talking and be quiet. Usually used as an imperative. Put a muzzle on it, you two! I don't want to hear any more for the rest of the drive to Grandma's house.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.