The Collaborative International Dictionary of English v.0.48:

Grope \Grope\, v. t.
   1. To search out by feeling in the dark; as, we groped our
      way at midnight.
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   2. To examine; to test; to sound. [Obs.] --Chaucer.
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            Felix gropeth him, thinking to have a bribe.
                                                  --Genevan
                                                  Test. (Acts
                                                  xxiv. ).
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The Collaborative International Dictionary of English v.0.48:

Grope \Grope\ (gr[=o]p), v. i. [imp. & p. p. Groped
   (gr[=o]pt); p. pr. & vb. n. Groping.] [OE. gropen, gropien,
   grapien, AS. gr[=a]pian to touch, grope, fr. gr[imac]pan to
   gripe. See Gripe.]
   1. To feel with or use the hands; to handle. [Obs.]
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   2. To search or attempt to find something in the dark, or, as
      a blind person, by feeling; to move about hesitatingly, as
      in darkness or obscurity; to feel one's way, as with the
      hands, when one can not see.
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            We grope for the wall like the blind. --Is. lix. 10.
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            To grope a little longer among the miseries and
            sensualities ot a worldly life.       --Buckminster.
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WordNet (r) 3.0 (2006):

grope
    n 1: the act of groping; and instance of groping
    v 1: feel about uncertainly or blindly; "She groped for her
         glasses in the darkness of the bedroom" [syn: grope,
         fumble]
    2: search blindly or uncertainly; "His mind groped to make the
       connection"
    3: fondle for sexual pleasure; "He made some sexual advances at
       the woman in his office and groped her repeatedly"