What part of speech is the word sharp?

"Sharp" can be several parts of speech depending on its use in a sentence:

* Adjective: This is the most common use, describing a quality like a sharp knife, a sharp mind, or a sharp turn.

* Adverb: Describing a verb, like "He turned the corner sharp."

* Noun: Can refer to a sharp musical note, or a particular type of instrument like a "sharp" (a musical instrument).

So, without context, it's difficult to say definitively what part of speech "sharp" is.