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  1. Download CCleaner | Clean, optimize & tune up your PC, free!

    Download CCleaner for FREE. Clean your PC of temporary files, tracking cookies, browser junk and more! Get the latest version today.

  2. CLEAN Definition & Meaning - Merriam-Webster

    The meaning of CLEAN is free from dirt or pollution. How to use clean in a sentence.

  3. CLEAN | definition in the Cambridge English Dictionary

    CLEAN meaning: 1. free from any dirty marks, pollution, bacteria, etc.: 2. honest or fair, or showing that you…. Learn more.

  4. CLEAN definition and meaning | Collins English Dictionary

    Something that is clean is free from dirt or unwanted marks. He wore his cleanest slacks, a clean shirt and a navy blazer. Disease has not been a problem because clean water is available. …

  5. What does clean mean? - Definitions.net

    Clean typically refers to something that is free from dirt, stains, impurities, or any form of contamination. It suggests a state of hygiene, orderliness, and neatness.

  6. clean adjective - Definition, pictures, pronunciation and usage …

    Definition of clean adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  7. CLEAN | meaning - Cambridge Learner's Dictionary

    clean adjective (NO CRIME) showing that you have not done anything illegal: a clean driving licence

  8. America was already losing to China on clean energy. Trump just …

    2 days ago · The new global clean energy regime can be summarized in one incredible statistic: China installed more wind and solar power in a single year than the total amount of renewable …

  9. clean - WordReference.com Dictionary of English

    clean is a verb and an adjective, cleanliness is a noun: We cleaned the house. Take a clean plate. Cleanliness is essential in a hospital. clean (klēn), adj., -er, -est, adv., -er, -est, v. unstained: …

  10. clean - Wiktionary, the free dictionary

    Jul 12, 2025 · Free of contamination, (unwanted) germs, infection, or disease. Insert a clean swab into your nose.