* As an adjective: Yes, "sound" can be an adjective meaning healthy, firm, or strong.
* Example: "She has a sound mind."
* As a noun: "Sound" is a noun meaning the sensation perceived by the ear.
* Example: "The sound of music filled the air."
* As a verb: "Sound" is a verb meaning to make a noise.
* Example: "The bell sounded."
Let me know the sentence you're working with, and I can tell you for sure how "sound" is being used!