* Noun: This is the most common usage, referring to the ability to see.
* Example: "Her sight was failing."
* Verb: This is less common, but it can be used to mean "to see" or "to catch a glimpse of".
* Example: "I sighted a ship on the horizon."
So, it depends on the context. Could you give me a sentence where you're using "sight"? I can tell you what part of speech it is then!