swaybacked

from WordNet (r) 3.0 (2006)

swaybacked
    adj 1: having abnormal sagging of the spine (especially in
           horses) [syn: {dipped}, {lordotic}, {swayback},
           {swaybacked}]

from The Collaborative International Dictionary of English v.0.48

Sway-backed \Sway"-backed`\, a.
   Having the back hollow or sagged, whether naturally or as the
   result of injury or weakness; -- said of horses and other
   animals.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

33 Moby Thesaurus words for "swaybacked":
      bandy, bandy-legged, blemished, bloated, bowlegged, club-footed,
      defaced, deformed, disfigured, dwarfed, flatfooted, grotesque,
      ill-made, ill-proportioned, ill-shaped, knock-kneed, malformed,
      marred, misbegotten, misproportioned, misshapen, monstrous,
      mutilated, out of shape, pigeon-toed, pug-nosed, rachitic, rickety,
      simous, snub-nosed, stumpy, talipedic, truncated

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