凶器

1. Origins, structure, and basic meaning

• Structure: Written 凶器 and read きょうき, it is an object used as a weapon to inflict serious injury or death.
• Basic usage: It may be a tool examined at a scene, and even an everyday item can become one through its use.

2. Common pitfalls and similar expressions

• Use can matter more than original purpose
  • An object need not have been manufactured as a weapon to function as one.