* Verb (past participle): This is the most common use. It describes an action that has already happened.
* Example: "The company supplied the necessary materials."
* Adjective: This is less common, but it can be used to describe something that has been provided.
* Example: "They had a supplied list of ingredients."
Let me know if you have a specific sentence in mind and I can tell you exactly what part of speech "supplied" is in that context.