Acanthocephala
  棘頭蟲綱; 棘頭動物門; 棘頭門
  Acan·tho·ceph·a·la /əˌkæn(t)θəˈsɛfələ/ 名詞 複數
  棘頭蟲(動)
  A·can·tho·ceph·a·la n. pl.  Zool. A group of intestinal worms, having the proboscis armed with recurved spines.
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  Acanthocephala
       n : phylum or class of elongated wormlike parasites that live in
           the intestines of vertebrates: spiny-headed worms [syn: phylum
           Acanthocephala]