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Adjective: barbellate  'baa(r)-bu,leyt
  1. Having or covered with protective barbs or quills or spines or thorns or setae etc.
    "a horse with a short barbellate mane";
    - barbed, briary, briery, bristled, bristly, burred, burry, prickly, setose, setaceous, spiny, thorny

See also: armed