What part of speech is the word shine?

The word "shine" can be several parts of speech depending on how it's used:

* Verb: This is the most common use, meaning to emit light. Example: "The sun shines brightly."

* Noun: This refers to the light emitted. Example: "The shine of her jewelry was dazzling."

* Adjective: This means "bright" or "polished." Example: "She had a shine on her shoes."

Let me know if you have a specific sentence in mind, and I can tell you which part of speech it is functioning as.