What is a goopaleen?

"Goopaleen" is not a recognized word in English. It's likely a misspelling or a word from a specific fictional universe or slang.

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* Where did you encounter this word? Was it in a book, a movie, a game, or online?

* What was the context of the word? What was it describing or referring to?

With more information, I can help you figure out what "goopaleen" might mean.