Yes, sound is a Scrabble word!

Verb

1. Appear in a certain way

2. Make a certain noise or sound

3. Give off a certain sound or sounds

4. Announce by means of a sound

5. Utter with vibrating vocal chords

6. Cause to sound

7. Measure the depth of (a body of water) with a sounding line

Adjective

1. Financially secure and safe

2. Exercising or showing good judgment

3. In good condition; free from defect or damage or decay

4. In excellent physical condition

5. Logically valid

6. Having legal efficacy or force

7. Free from moral defect

8. (of sleep) deep and complete

9. Thorough

Noun

1. The particular auditory effect produced by a given cause

2. The subjective sensation of hearing something

3. Mechanical vibrations transmitted by an elastic medium

4. The sudden occurrence of an audible event

5. The audible part of a transmitted signal

6. (phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language

7. A narrow channel of the sea joining two larger bodies of water

8. A large ocean inlet or deep bay