What part of speech is the word illustrated?

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

* Verb: This is the most common usage. It means to provide pictures or drawings to explain or decorate something.

* Example: "The book was illustrated by a famous artist."

* Adjective: This means decorated with pictures or drawings.

* Example: "She bought an illustrated edition of the classic novel."

* Past participle: This is used as part of a verb phrase, often with "have" or "be."

* Example: "The book has been illustrated with beautiful watercolors."

So, without a sentence to provide context, it's impossible to say definitively which part of speech "illustrated" is.