What part of speech is the word broken?

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

* Adjective: This is the most common usage, describing something that is damaged or no longer functioning. For example, "The vase is broken."

* Past participle: Used as part of a verb phrase to indicate a completed action. For example, "The window was broken by the storm."

* Verb: A rarely used form of the verb "to break," often in the past tense. For example, "The vase broke when it fell."

To determine the part of speech, you need to look at the context of the sentence.