Moral purity; innocence. / The state of being physically clean and free of contamination or dirt; cleanliness.

plural of cleanness

Not dirty. / In an unmarked condition. / (aerodynamics) Allowing an uninterrupted flow over surfaces, without protrusions such as racks or landing gear.

Removal of dirt. / (weightlifting) The first part of the event clean and jerk in which the weight is brought from the ground to the shoulders.

(transitive) To remove dirt from a place or object. / (transitive) To tidy up, make a place neat. / (transitive, climbing) To remove equipment from a climbing route after it was previously lead climbed.

Fully and completely.

present participle of clean

(gerund of clean) The process of making something clean. / The afterbirth of cows, ewes, etc.

That cleans.

simple past tense and past participle of clean