The Collaborative International Dictionary of English v.0.48:

Scraggy \Scrag"gy\, a. [Compar. Scragger; superl.
   Scraggiest.]
   1. Rough with irregular points; scragged. "A scraggy rock."
      --J. Philips.
      [1913 Webster]

   2. Lean and rough; scragged. "His sinewy, scraggy neck."
      --Sir W. Scott.
      [1913 Webster]

WordNet (r) 3.0 (2006):

scraggy
    adj 1: being very thin; "a child with skinny freckled legs"; "a
           long scrawny neck" [syn: scraggy, boney, scrawny,
           skinny, underweight, weedy]
    2: having a sharply uneven surface or outline; "the jagged
       outline of the crags"; "scraggy cliffs" [syn: jagged,
       jaggy, scraggy]

Moby Thesaurus II by Grady Ward, 1.0:

82 Moby Thesaurus words for "scraggy":
   Lilliputian, Tom Thumb, angular, asperous, bony, corrugated,
   cragged, craggy, crinkled, crumpled, dumpy, dwarf, dwarfed,
   dwarfish, elfin, flat, flat-chested, fleshless, gangling, gangly,
   gaunt, gawky, gravelly, harsh, incipient, ironbound, jagged, jaggy,
   lank, lanky, lean, lean-fleshed, lean-looking, meager, midget,
   nanoid, pygmy, ragged, rawboned, rockbound, rocky, rudimental,
   rudimentary, rugged, rugose, rugous, runty, saw-toothed, sawtooth,
   scabrous, scragged, scraggly, scrawny, scrubby, serrate, serrated,
   shriveled, shrunk, shrunken, skeletal, skinny, snagged, snaggled,
   snaggy, spare, spidery, spindling, spindly, squat, stony, stunted,
   thin-bellied, thin-fleshed, twiggy, undersize, undersized,
   underweight, uneven, unlevel, unsmooth, wizened, wrinkled