How do you spell ghelli suit?

There's no such thing as a "ghelli suit." It's possible you're thinking of a different word, or it could be a misspelling.

Can you provide more context? For example:

* Where did you hear or see this term?

* What is it supposed to be? (A type of clothing? A fictional item?)

* Are there any other details you can recall?

With more information, I might be able to help you figure out the correct spelling!