The Collaborative International Dictionary of English v.0.48:

Clean \Clean\ (kl[=e]n), a. [Compar. Cleaner (kl[=e]n"[~e]r);
   superl. Cleanest.] [OE. clene, AS. cl[=ae]ne; akin to OHG.
   chleini pure, neat, graceful, small, G. klein small, and
   perh. to W. glan clean, pure, bright; all perh. from a
   primitive, meaning bright, shining. Cf. Glair.]
   1. Free from dirt or filth; as, clean clothes.
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   2. Free from that which is useless or injurious; without
      defects; as, clean land; clean timber.
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   3. Free from awkwardness; not bungling; adroit; dexterous;
      as, a clean trick; a clean leap over a fence.
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   4. Free from errors and vulgarisms; as, a clean style.
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   5. Free from restraint or neglect; complete; entire.
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            When ye reap the harvest of your land, thou shalt
            not make clean riddance of corners of thy field.
                                                  --Lev. xxiii.
                                                  22.
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   6. Free from moral defilement; sinless; pure.
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            Create in me a clean heart, O God.    --Ps. li. 10
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            That I am whole, and clean, and meet for Heaven
                                                  --Tennyson.
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   7. (Script.) Free from ceremonial defilement.
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   8. Free from that which is corrupting to the morals; pure in
      tone; healthy. "Lothair is clean." --F. Harrison.
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   9. Well-proportioned; shapely; as, clean limbs.
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   A clean bill of health, a certificate from the proper
      authority that a ship is free from infection.

   Clean breach. See under Breach, n., 4.

   To make a clean breast. See under Breast.
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The Collaborative International Dictionary of English v.0.48:

Cleaner \Clean"er\, n.
   One who, or that which, cleans.
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WordNet (r) 3.0 (2006):

cleaner
    n 1: a preparation used in cleaning something [syn: cleansing
         agent, cleanser, cleaner]
    2: the operator of dry-cleaning establishment [syn: cleaner,
       dry cleaner]
    3: someone whose occupation is cleaning

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "cleaner":
   abstergent, cathartic, char, charwoman, cleaner-off, cleaner-up,
   cleaning agent, cleaning lady, cleaning man, cleaning solvent,
   cleaning woman, cleanser, cleansing cream, cold cream, cream,
   custodian, dentifrice, depurant, detergent, diuretic, emetic,
   enema, holystone, janitor, janitress, lotion, mouthwash, nauseant,
   pumice stone, purgative, purge, purifier, rinse, shampoo, soap,
   solvent, synthetic detergent, tooth powder, toothpaste, wash