Free of dirt or impurities; not dirty.

• Hygienic or sanitary.

To remove dirt from something.

• To tidy up and make a place neat.

The act or process of cleaning.

• Removal of dirt.

Honest or lawful; free of wrongdoing or corruption.

• With no offenses on a record.

Environmentally friendly; causing little pollution.

Completely; entirely.

Weightlifting: the clean in the clean and jerk.

• Lifting the bar from floor to shoulders.