proper noun or X-ACTO
- X-ACTOâ„¢ the trademark name for a utility knife.
- A utility knife, usually with a short, sharp, disposable blade mounted on a pen-like body, usually for crafts and hobby, hobbies. Also X-Acto knife.
- Pertaining to such a utility knife, especially a component.
- A box of X-Acto number 11 blades
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