[1] : The Collaborative International Dictionary of English v.0.48

preach \preach\, v. i. imp.  p. p. preached; p. pr.  vb. n.
   preaching. oe. prechen, of. preechier, f. pr^echer, fr.
   l. praedicare to cry in public, to proclaim; prae before +
   dicare to make known, dicere to say; or perhaps from
   assumed ll. praedictare. see diction, and cf.
   predicate, predict.
   1. to proclaim or publish tidings; specifically, to proclaim
      the gospel; to discourse publicly on a religious subject,
      or from a text of scripture; to deliver a sermon.
      1913 webster

            how shall they preach, except they be sent? --rom.
                                                  x. 15.
      1913 webster

            from that time jesus began to preach. --matt. iv.
                                                  17.
      1913 webster

   2. to give serious advice on morals or religion; to discourse
      in the manner of a preacher.
      1913 webster
see also:
preached preaching diction predicate predict 

[2] : The Collaborative International Dictionary of English v.0.48

preaching \preach"ing\ pr=ech"i^ng, n.
   the act of delivering a religious discourse; the art of
   sermonizing; also, a sermon; a public religious discourse;
   serious, earnest advice. --milner.
   1913 webster

   preaching cross, a cross, sometimes surmounting a pulpit,
      erected out of doors to designate a preaching place.

   preaching friars. see dominican.
      1913 webster
see also:
preaching cross preaching friars dominican 

[3] : WordNet (r) 2.0

preaching
     n 1: an address of a religious nature usually delivered during a
          church service syn: sermon, discourse
     2: a moralistic rebuke; "your preaching is wasted on him" syn:
         sermon
see also:
sermon discourse 

[4] : Moby Thesaurus II by Grady Ward, 1.0

36 moby thesaurus words for "preaching":
   allurement, blandishment, cajolement, cajolery, coaxing, conning,
   discourse, engagement, enlistment, exhortation, homily, hortation,
   inducement, jawboning, lecture, lobbying, persuasion, preach,
   preachification, preachment, prelection, religious discourse,
   sales talk, salesmanship, selling, sermon, sermonette, sermonizing,
   snow job, soft soap, solicitation, suasion, sweet talk, travelogue,
   wheedling, working on

Preaching >> P Words
Preaching, definition of term: Preaching
preaching_pag1.html