What is the definition of Forbidden Weapon?

A 'forbidden weapon' is like a superhero with a secret identity that no one wants to see on their favorite TV show. It's a firearm, a dagger, or even a magic wand that's deemed too dangerous to own for the average person. It's basically a weapon so potent, it could take down an army without even needing to say "let's go!"

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Here's a chilling example sentence: "After discovering the secret lair of the infamous 'Forbidden Sword', the lone detective couldn't resist a well-placed 'fire' and decided to wield it against the corrupt cop, proving that even a detective with a bad conscience can't resist the allure of a weapon labeled 'Forbidden.'"