What is the part of speech for plum?

"Plum" can be a few different parts of speech, depending on how it's used in a sentence:

* Noun: When referring to the fruit itself. Example: "I ate a delicious plum."

* Adjective: When describing something as being a deep purplish-red color. Example: "She wore a plum-colored dress."

Let me know if you have a specific sentence in mind and I can help you determine the part of speech!