The Collaborative International Dictionary of English v.0.48:

Spined \Spined\, a.
   Furnished with spines; spiny.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "spined":
   acanthoid, acanthous, acicular, acuate, aculeate, aculeiform,
   acuminate, acute, barbed, cornuted, cusped, cuspidate, hispid,
   horned, horny, mucronate, needle-pointed, needle-sharp, pointed,
   pronged, sharp-pointed, spiculate, spiked, spiky, spinous, spiny,
   tapered, tapering, tined, toothed, unbated