Tears are a child's weapon.

Watch out for her. Her weapon is language - if she wants to, she'll talk you to death.

What's your favorite weapon?

The police spent hours searching Tom's place, but they couldn't find the murder weapon.

Tom wore gloves to avoid leaving his fingerprints on the murder weapon.

This looks like it might be the weapon that was used to kill Tom.

I suggest you put that weapon down.

It's a weapon.

Tom grabbed a crowbar to use as a weapon.

No one uses that kind of weapon anymore.