Meaning of hold one's fire | Babel Free

Definitions

1. Do not discharge a weapon. Used originally for weapons needing a spark or lighting of a fuse to ignite gunpowder; now sometimes used to mean any weapon launching a projectile.
2. Wait, don't retaliate, calm down, be quiet.
   colloquial, idiomatic

Examples

“Hold your fire and let me explain.”

CEFR level