Adjective bobtail has 1 sense
  1. bobtail, bobtailed - having a short or shortened tail; "bobtail mare"
    Antonyms: acaudate, acaudal (indirect, via caudate)
,Noun bobtail has 2 senses
  1. bobtail, bob, dock - a short or shortened tail of certain animals
    --1 is a kind of tail
  2. Old English sheepdog, bobtail - large sheepdog with a profuse shaggy blue-gray-and-white coat and short tail; believed to trace back to Roman occupation of Britain
    --2 is a kind of shepherd dog, sheepdog, sheep dog
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