The word "worn" belongs to two parts of speech.
It is the past participle of the irregular verb "to wear".
It can also be used as an adjective, e.g. "Her clothes looked worn and shabby".
Asked in Parts of Speech
Does a dictionary determine the part of speech of a word?
A dictionary can show a word's part of speech, but it does not determine it. How a word is used in a sentence determines its part of speech. ...