The Collaborative International Dictionary of English v.0.48:

Wade \Wade\, v. i. [imp. & p. p. Waded; p. pr. & vb. n.
   Wading.] [OE. waden to wade, to go, AS. wadan; akin to
   OFries. wada, D. waden, OHG. watan, Icel. va?a, Sw. vada,
   Dan. vade, L. vadere to go, walk, vadum a ford. Cf. Evade,
   Invade, Pervade, Waddle.]
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   1. To go; to move forward. [Obs.]
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            When might is joined unto cruelty,
            Alas, too deep will the venom wade.   --Chaucer.
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            Forbear, and wade no further in this speech. --Old
                                                  Play.
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   2. To walk in a substance that yields to the feet; to move,
      sinking at each step, as in water, mud, sand, etc.
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            So eagerly the fiend . . .
            With head, hands, wings, or feet, pursues his way,
            And swims, or sinks, or wades, or creeps, or flies.
                                                  --Milton.
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   3. Hence, to move with difficulty or labor; to proceed ?lowly
      among objects or circumstances that constantly ?inder or
      embarrass; as, to wade through a dull book.
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            And wades through fumes, and gropes his way.
                                                  --Dryden.
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            The king's admirable conduct has waded through all
            these difficulties.                   --Davenant.
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The Collaborative International Dictionary of English v.0.48:

Wading \Wad"ing\,
   a. & n. from Wade, v.
   [1913 Webster]

   Wading bird. (Zool.) See Wader, 2.
      [1913 Webster]

WordNet (r) 3.0 (2006):

wading
    n 1: walking with your feet in shallow water

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "wading":
   Australian crawl, aquaplaning, aquatics, backstroke, balneation,
   bathe, bathing, breaststroke, butterfly, crawl, diving, dog paddle,
   fin, fishtail, flapper, flipper, floating, natation, sidestroke,
   surfboarding, surfing, swim, swimming