The Collaborative International Dictionary of English v.0.48:

Nuzzle \Nuz"zle\ (n[u^]z"z'l), v. t. [imp. & p. p. Nuzzled
   (n[u^]z"z'ld);p. pr. & vb. n. Nuzzling (n[u^]z"zl[i^]ng).]
   [See Noursle.]
   [1913 Webster]
   1. To noursle or nurse; to foster; to bring up. [Obs.]
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            The people had been nuzzled in idolatry. --Milton.
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   2. [Perh. a corruption of nestle. Cf. Nustle.] To nestle;
      to house, as in a nest.
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The Collaborative International Dictionary of English v.0.48:

Nuzzle \Nuz"zle\ (n[u^]z"z'l), v. i. [Dim. fr. nose. See
   Nozzle.]
   1. To work with the nose, like a swine in the mud.
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            And nuzzling in his flank, the loving swine
            Sheathed, unaware, the tusk in his soft groin.
                                                  --Shak.
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            He charged through an army of lawyers, sometimes . .
            . nuzzling like an eel in the mud.    --Arbuthnot.
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   2. To go with head poised like a swine, with nose down.
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            Sir Roger shook his ears, and nuzzled along.
                                                  --Arbuthnot.
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   3. [Cf. Nuzzle, v. t., 2.] To hide the head, as a child in
      the mother's bosom; to nestle.
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   4. To loiter; to idle. [Prov. Eng.] --Halliwell.
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The Collaborative International Dictionary of English v.0.48:

Noursle \Nour"sle\, v. t. [Freq., fr. OE. nourse. See Nurse.]
   To nurse; to rear; to bring up. [Obs.] [Written also nosel,
   nousel, nousle, nowsle, nusle, nuzzle, etc.]
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         She noursled him till years he raught.   --Spenser.
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WordNet (r) 3.0 (2006):

nuzzle
    v 1: move or arrange oneself in a comfortable and cozy position;
         "We cuddled against each other to keep warm"; "The children
         snuggled into their sleeping bags" [syn: cuddle,
         snuggle, nestle, nest, nuzzle, draw close]
    2: rub noses [syn: nuzzle, nose]
    3: dig out with the snout; "the pig nuzzled the truffle"

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "nuzzle":
   bundle, burrow, caress, croodle, cuddle, feel up, fondle, knead,
   lap, massage, nestle, nose, pet, rub, rub against, rub noses,
   snuggle, stroke