What part of speech is the word washed?

"Washed" can be two different parts of speech, depending on how it's used:

* Verb (past tense): This is the most common usage. Example: "She washed her hands."

* Adjective: This is used to describe something that has been cleaned with water. Example: "The washed dishes were sparkling."

So, to determine the part of speech, you need to consider the context of the sentence.