Source : Webster's Revised Unabridged Dictionary (1913)

Pollute \Pol*lute"\, v. t. [imp. & p. p. {Polluted}; p. pr. &
   vb. n. {Polluting}.] [L. pollutus, p. p. of polluere to
   defile, to pollute, from a prep. appearing only in comp. +
   luere to wash. See {Position}, {Lave}.]
   1. To make foul, impure, or unclean; to defile; to taint; to
      soil; to desecrate; -- used of physical or moral
      defilement.

            The land was polluted with blood.     --Ps. cvi. 38

            Wickedness . . . hath polluted the whole earth. --2
                                                  Esd. xv. 6.

   2. To violate sexually; to debauch; to dishonor.

   3. (Jewish Law) To render ceremonially unclean; to disqualify
      or unfit for sacred use or service, or for social
      intercourse.

            Neither shall ye pollute the holy things of the
            children of Israel, lest ye die.      --Num. xviii.
                                                  32.

            They have polluted themselves with blood. --Lam. iv.
                                                  14.

   Syn: To defile; soil; contaminate; corrupt; taint; vitiate;
        debauch; dishonor; ravish.

Pollute \Pol*lute"\, a. [L. pollutus.]
   Polluted. [R.] --Milton.

Source : WordNet®

pollute
     v : make impure; "The industrial wastes polluted the lake" [syn:
          {foul}, {contaminate}]