The Collaborative International Dictionary of English v.0.48:

Cuddle \Cud"dle\ (k[u^]d"d'l), v. i. [imp. & p. p. Cuddled
   (-d'ld); p. pr. & vb. n. Cuddling (-dl[i^]ng).] [Prob. for
   couthle, fr. couth known; cf. OE. ku[thorn][thorn]en to
   cuddle, or cu[eth]lechen to make friends with. SeeCouth,
   Uncouth, Can.]
   To lie close or snug; to crouch; to nestle.
   [1913 Webster]

         She cuddles low beneath the brake;
         Nor would she stay, nor dares she fly.   --Prior.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cuddle \Cud"dle\, v. t.
   To embrace closely; to fondle. --Forby.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cuddle \Cud"dle\, n.
   A close embrace.
   [1913 Webster] cuddlesome

WordNet (r) 3.0 (2006):

cuddle
    n 1: a close and affectionate (and often prolonged) embrace
         [syn: cuddle, nestle, snuggle]
    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: hold (a person or thing) close, as for affection, comfort, or
       warmth; "I cuddled the baby"

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "cuddle":
   bill and coo, bundle, burrow, caress, cosset, croodle, cuddle up,
   curl up, dandle, embrace, enfold, fondle, hold, hug, lap, love,
   neck, nestle, nuzzle, pet, smooch, snug, snug up, snuggle,
   snuggle up to