Here's a breakdown:
* Frag: Shortened form of "fragmentation."
* Grenade: An explosive device designed to be thrown by hand.
Therefore, "frago" is simply a quick way to refer to a fragmentation grenade.
It's important to note:
* Using "frago" in a civilian setting might be confusing or even alarming.
* The term is generally associated with military settings and can be considered inappropriate or disrespectful outside of those contexts.
If you're unsure about the appropriate language to use, it's always best to choose a more neutral or formal term.