The Collaborative International Dictionary of English v.0.48:

Wallow \Wal"low\, v. i. [imp. & p. p. Wallowed; p. pr. & vb.
   n. Wallowing.] [OE. walwen, AS. wealwian; akin to Goth.
   walwjan (in comp.) to roll, L. volvere; cf. Skr. val to turn.
   [root]147. Cf. Voluble Well, n.]
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   1. To roll one's self about, as in mire; to tumble and roll
      about; to move lazily or heavily in any medium; to
      flounder; as, swine wallow in the mire.
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            I may wallow in the lily beds.        --Shak.
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   2. To live in filth or gross vice; to disport one's self in a
      beastly and unworthy manner.
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            God sees a man wallowing in his native impurity.
                                                  --South.
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   3. To wither; to fade. [Prov. Eng. & Scot.]
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