The Collaborative International Dictionary of English v.0.48:

sprawl \sprawl\ (spr[add]l), n.
   The position or state resulting from sprawling; as, he sat on
   the couch in a sprawl; uncontrolled urban sprawl.
   [PJC]

The Collaborative International Dictionary of English v.0.48:

Sprawl \Sprawl\ (spr[add]l), v. i. [imp. & p. p. Sprawled
   (spr[add]ld); p. pr. & vb. n. Sprawling.] [OE. spraulen;
   cf. Sw. sprattla to sprawl, dial. Sw. spralla, Dan. spraelle,
   spraelde, D. spartelen, spertelen, to flounder, to struggle.]
   1. To spread and stretch the body or limbs carelessly in a
      horizontal position; to lie with the limbs stretched out
      ungracefully.
      [1913 Webster]

   2. To spread irregularly, as vines, plants, or trees; to
      spread ungracefully, as chirography.
      [1913 Webster]

   3. To move, when lying down, with awkward extension and
      motions of the limbs; to scramble in creeping.
      [1913 Webster]

            The birds were not fledged; but upon sprawling and
            struggling to get clear of the flame, down they
            tumbled.                              --L'Estrange.
      [1913 Webster]

WordNet (r) 3.0 (2006):

sprawl
    n 1: an aggregation or continuous network of urban communities
         [syn: conurbation, urban sprawl, sprawl]
    2: an ungainly posture with arms and legs spread about [syn:
       sprawl, sprawling]
    v 1: sit or lie with one's limbs spread out
    2: go, come, or spread in a rambling or irregular way; "Branches
       straggling out quite far" [syn: sprawl, straggle]