1. 
[syn: barbed, barbellate, briary, briery, bristled, bristly, burred, burry, prickly, setose, setaceous, spiny, thorny]
The Collaborative International Dictionary of English v.0.48:
Setaceous \Se*ta"ceous\ (s[-e]*t[=a]"sh[u^]s), a. [L. seta a
   bristle: cf. F. s['e]tac['e].]
   1. Set with, or consisting of, bristles; bristly; as, a
      stiff, setaceous tail.
      [1913 Webster]
   2. Bristelike in form or texture; as, a setaceous feather; a
      setaceous leaf.
      [1913 Webster]
WordNet (r) 3.0 (2006):
setaceous
    adj 1: having or covered with protective barbs or quills or
           spines or thorns or setae etc.; "a horse with a short
           bristly mane"; "bristly shrubs"; "burred fruits";
           "setaceous whiskers" [syn: barbed, barbellate,
           briary, briery, bristled, bristly, burred,
           burry, prickly, setose, setaceous, spiny,
           thorny]