An absence of debts or indictments. / (soccer) A game played without having conceded a goal. / Used other than figuratively or idiomatically: see clean, sheet.

(transitive) To carry out spring-cleaning on (a room, a house, etc). / (intransitive) To engage in spring-cleaning.

(simile) Very clean / (simile) Completely innocent; beyond moral reproach.

A copy of a draft of a document without editing notations.

Any technology that may mitigate emissions of carbon dioxide and other greenhouse gasses that arise from the burning of coal for electrical power.

plural of cleaning shoe

(agriculture) The part of a harvester or combine which both sieves out large impurities such as rocks and blows out light impurities such as chaff

present participle of clean up

simple past tense and past participle of clean out

simple past tense and past participle of clean up