What does ilusm mean?

"Ilusm" is not a recognized word in English or any other major language. It's likely a misspelling or a made-up term.

Could you please double-check the spelling or provide more context?

Perhaps you meant:

* Illusion: A false perception of reality.

* Illusionist: A magician who creates illusions.

* Illicit: Forbidden or unlawful.

* Illustrious: Very famous or distinguished.

If you can clarify the meaning you're looking for, I can help you better!