Yes, well is a Scrabble word!

Adverb

1. (often used as a combining form) in a good or proper or satisfactory manner or to a high standard (`good' is a nonstandard dialectal variant for `well')

2. Thoroughly or completely; fully; often used as a combining form

3. Indicating high probability; in all likelihood

4. (used for emphasis or as an intensifier) entirely or fully

5. To a suitable or appropriate extent or degree

6. Favorably; with approval

7. To a great extent or degree

8. With great or especially intimate knowledge

9. With prudence or propriety

10. With skill or in a pleasing manner

11. In a manner affording benefit or advantage

12. In financial comfort

13. Without unusual distress or resentment; with good humor

Verb

1. Come up, as of a liquid

Adjective

1. In good health especially after having suffered illness or injury; at least I feel well"

2. Resulting favorably

3. Wise or advantageous and hence advisable

Noun

1. A deep hole or shaft dug or drilled to obtain water or oil or gas or brine

2. A cavity or vessel used to contain liquid

3. An abundant source

4. An open shaft through the floors of a building (as for a stairway)

5. An enclosed compartment in a ship or plane for holding something as e.g. fish or a plane's landing gear or for protecting something as e.g. a ship's pumps