What part of speech is the word return?

The word "return" can be multiple parts of speech, depending on how it's used in a sentence:

* Verb: "I will return the book tomorrow."

* Noun: "The return of the king was celebrated."

* Adjective: "We had a return visit from our friends."

Let me know the sentence you're working with, and I can tell you the specific part of speech in that context.