Yes, wish is a Scrabble word!

Verb

1. Hope for; have a wish

2. Prefer or wish to do something

3. Make or express a wish

4. Feel or express a desire or hope concerning the future or fortune of

5. Order politely; express a wish for

6. Invoke upon

Noun

1. A specific feeling of desire

2. An expression of some desire or inclination

3. (usually plural) a polite expression of desire for someone's welfare

4. The particular preference that you have