What part of speech is million?

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

* Noun: When referring to the number itself, such as "a million dollars."

* Adjective: When describing a quantity, such as "a million stars."

* Numeral: When representing a specific quantity, like "one million."

Let me know if you have a specific sentence in mind and I can tell you the part of speech for "million" in that context!