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

harp \harp\, v. i. imp.  p. p. harped haumrpt p. pr. 
   vb. n. harping. as. hearpian. see harp, n.
   1. to play on the harp.
      1913 webster

            i heard the voice of harpers, harping with their
            harps.                                --rev. xiv. 2.
      1913 webster

   2. to dwell on or recur to a subject tediously or
      monotonously in speaking or in writing; to refer to
      something repeatedly or continually; -- usually with on or
      upon. "harpings upon old themes." --w. irving.
      1913 webster

            harping on what i am,
            not what he knew i was.               --shak.
      1913 webster

   to harp on one string, to dwell upon one subject with
      disagreeable or wearisome persistence. colloq.
      1913 webster
see also:
harped harping harp to harp on one string 

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

harping \harp"ing\ haumrp"i^ng, a.
   pertaining to the harp; as, harping symphonies. --milton.
   1913 webster

Harping >> H Words
Harping, definition of term: Harping
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