Source : Webster's Revised Unabridged Dictionary (1913)

Clean \Clean\, adv.
   1. Without limitation or remainder; quite; perfectly; wholly;
      entirely. ``Domestic broils clean overblown.'' --Shak.
      ``Clean contrary.'' --Milton.

            All the people were passed clean over Jordan.
                                                  --Josh. iii.
                                                  17.

   2. Without miscarriage; not bunglingly; dexterously. [Obs.]
      ``Pope came off clean with Homer.'' --Henley.

Clean \Clean\, a. [Compar. {Cleaner}; superl. {Cleanest}.] [OE.
   clene, AS. cl?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.

   2. Free from that which is useless or injurious; without
      defects; as, clean land; clean timber.

   3. Free from awkwardness; not bungling; adroit; dexterous;
      as, aclean trick; a clean leap over a fence.

   4. Free from errors and vulgarisms; as, a clean style.

   5. Free from restraint or neglect; complete; entire.

            When ye reap the harvest of your land, thou shalt
            not make clean riddance of corners of thy field.
                                                  --Lev. xxiii.
                                                  22.

   6. Free from moral defilement; sinless; pure.

            Create in me a clean heart, O God.    --Ps. li. 10

            That I am whole, and clean, and meet for Heaven
                                                  --Tennyson.

   7. (Script.) Free from ceremonial defilement.

   8. Free from that which is corrupting to the morals; pure in
      tone; healthy. ``Lothair is clean.'' --F. Harrison.

   9. Well-proportioned; shapely; as, clean limbs.

   {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}.

Clean \Clean\, v. t. [imp. & p. p. {Cleaned}; p. pr. & vb. n.
   {Cleaning}.] [See {Clean}, a., and cf. {Cleanse}.]
   To render clean; to free from whatever is foul, offensive, or
   extraneous; to purify; to cleanse.

   {To clean out}, to exhaust; to empty; to get away from (one)
      all his money. [Colloq.] --De Quincey.

Source : WordNet®

clean
     adj 1: free from dirt or impurities; or having clean habits;
            "children with clean shining faces"; "clean white
            shirts"; "clean dishes"; "a spotlessly clean house";
            "cats are clean animals" [ant: {dirty}]
     2: free of restrictions or qualifications; "a clean bill of
        health"; "a clear winner" [syn: {clear}]
     3: (of sound or color) free from anything that dulls or dims;
        "efforts to obtain a clean bass in orchestral recordings";
        "clear laughter like a waterfall"; "clear reds and blues";
        "a light lilting voice like a silver bell" [syn: {clear},
        {light}, {unclouded}]
     4: free from impurities; "clean water"; "fresh air" [syn: {fresh}]
     5: without difficulties or problems; "a clean test flight"
     6: ritually clean or pure [ant: {unclean}]
     7: not spreading pollution or contamination; especially
        radioactive contamination; "a clean fuel"; "cleaner and
        more efficient engines"; "the tactical bomb is reasonably
        clean" [syn: {uncontaminating}] [ant: {dirty}]
     8: (of behavior or especially language) free from objectionable
        elements; fit for all observers; "good clean fun"; "a
        clean joke" [syn: {unobjectionable}] [ant: {dirty}]
     9: free from sepsis or infection; "a clean (or uninfected)
        wound" [syn: {uninfected}]
     10: morally pure; "led a clean life" [syn: {clean-living}]
     11: (of a manuscript) having few alterations or corrections;
         "fair copy"; "a clean manuscript" [syn: {fair}]
     12: of a surface; not written or printed on; "blank pages";
         "fill in the blank spaces"; "a clean page"; "wide white
         margins" [syn: {blank}, {white}]
     13: marked by or calling for sportsmanship or fair play; "a
         clean fight"; "a sporting solution of the disagreement";
         "sportsmanlike conduct" [syn: {sporting}, {sportsmanlike}]
     14: thorough and without qualification; "a clean getaway"; "a
         clean sweep"; "a clean break"
     15: (of a record) having no marks of discredit or offense; "a
         clean voting recor"; "a clean driver's license"
     16: not carrying concealed weapons
     17: free from clumsiness; precisely or deftly executed; "he
         landed a clean left on his opponent's cheek"; "a clean
         throw"; "the neat exactness of the surgeon's knife" [syn:
          {neat}]
     18: free of drugs; "after a long dependency on heroin she has
         been clean for 4 years"

clean
     adv 1: completely; used as intensifiers; "clean forgot the
            appointment"; "I'm plumb (or plum) tuckered out" [syn:
             {plumb}, {plum}]
     2: in conformity with the rules or laws and without fraud or
        cheating; "they played fairly" [syn: {fairly}, {fair}]
        [ant: {unfairly}]

clean
     n : a weightlift in which the barbell is lifted to shoulder
         height and then jerked overhead [syn: {clean and jerk}]

clean
     v 1: make clean by removing dirt, filth, or unwanted substances
          from; "Clean the stove!"; "The dentist cleaned my teeth"
          [syn: {make clean}] [ant: {dirty}]
     2: remove unwanted substances from, such as feathers or pits;
        "Clean the turkey" [syn: {pick}]
     3: clean and tidy up the house; "She housecleans every week"
        [syn: {houseclean}, {clean house}]
     4: clean one's body or parts thereof, as by washing; "clean up
        before you see your grandparents"; "clean your fingernails
        before dinner" [syn: {cleanse}]
     5: be cleanable; "This stove cleans easily"
     6: deprive wholly of money in a gambling game, robbery, etc.;
        "The other players cleaned him completely"
     7: remove all contents or possession from, or empty completely;
        "The boys cleaned the sandwich platters"; "The trees were
        cleaned of apples by the storm" [syn: {strip}]
     8: remove while making clean; "Clean the spots off the rug"
     9: remove unwanted substances from [syn: {scavenge}]
     10: remove shells or husks from; "clean grain before milling it"

Source : Free On-Line Dictionary of Computing

Clean
     
         A {lazy} {higher-order} {purely functional
        language} from the {University of Nijmegen}.  Clean was
        originally a subset of {Lean}, designed to be an experimental
        {intermediate language} and used to study the {graph
        rewriting} model.  To help focus on the essential
        implementation issues it deliberately lacked all {syntactic
        sugar}, even {infix} expressions or {complex lists},
     
        As it was used more and more to construct all kinds of
        applications it was eventually turned into a general purpose
        functional programming language, first released in May 1995.
        The new language is {strongly typed} (Milner/Mycroft type
        system), provides {modules} and {functional I/O} (including a
        {WIMP} interface), and supports {parallel processing} and
        {distributed processing} on {loosely coupled} parallel
        architectures.  Parallel execution was originally based on the
        {PABC} {abstract machine}.
     
        It is one of the fastest implementations of functional
        languages available, partly aided by programmer {annotations}
        to influence evaluation order.
     
        Although the two variants of Clean are rather different, the
        name Clean can be used to denote either of them.  To
        distinguish, the old version can be referred to as Clean 0.8,
        and the new as Clean 1.0 or Concurrent Clean.
     
        The current release of Clean (1.0) includes a compiler,
        producing code for the {ABC} {abstract machine}, a {code
        generator}, compiling the ABC code into either {object-code}
        or {assembly language} (depending on the {platform}), I/O
        libraries, a {development environment} (not all platforms),
        and {documentation}.  It is supported (or will soon be
        supported) under {Mac OS}, {Linux}, {OS/2}, {Windows 95},
        {SunOS}, and {Solaris}.
     
        {Home (http://www.cs.kun.nl/~clean/)}.  E-mail:
        .  Mailing list: .
     
        ["Clean - A Language for Functional Graph Rewriting", T. Brus
        et al, IR 95, U Nijmegen, Feb 1987].
     
        ["Concurrent Clean", M.C. van Eekelen et al, TR 89-18, U
        Nijmegen, Netherlands, 1989].
     
        [{Jargon File}]
     
        (1995-11-08)

clean
     
        1. Used of hardware or software designs, implies "elegance in
        the small", that is, a design or implementation that may not
        hold any surprises but does things in a way that is reasonably
        intuitive and relatively easy to comprehend from the outside.
        The antonym is "grungy" or crufty.
     
        2. To remove unneeded or undesired files in a effort to reduce
        clutter: "I'm cleaning up my account."  "I cleaned up the
        garbage and now have 100 Meg free on that partition."
     
        [{Jargon File}]
     
        (1994-12-12)