Yes, clean is a Scrabble word!

Adverb

1. Completely; used as intensifiers

2. In conformity with the rules or laws and without fraud or cheating

Verb

1. Make clean by removing dirt, filth, or unwanted substances from

2. Remove unwanted substances from, such as feathers or pits

3. Clean and tidy up the house

4. Clean one's body or parts thereof, as by washing

5. Be cleanable

6. Deprive wholly of money in a gambling game, robbery, etc.

7. Remove all contents or possession from, or empty completely

8. Remove while making clean

9. Remove unwanted substances from

10. Remove shells or husks from

Adjective

1. Free from dirt or impurities; or having clean habits

2. Free of restrictions or qualifications

3. (of sound or color) free from anything that dulls or dims

4. Free from impurities

5. (of a record) having no marks of discredit or offense

6. Ritually clean or pure

7. Not spreading pollution or contamination; especially radioactive contamination

8. (of behavior or especially language) free from objectionable elements; fit for all observers

9. Free from sepsis or infection

10. Morally pure

11. (of a manuscript) having few alterations or corrections

12. (of a surface) not written or printed on

13. Exhibiting or calling for sportsmanship or fair play

14. Without difficulties or problems

15. Thorough and without qualification

16. Not carrying concealed weapons

17. Free from clumsiness; precisely or deftly executed

18. Free of drugs

Noun

1. A weightlift in which the barbell is lifted to shoulder height and then jerked overhead