Noun puff adder has 2 senses
  1. puff adder, Bitis arietans - large African viper that inflates its body when alarmed
    --1 is a kind of viper
    --1 is a member of Bitis, genus Bitis
  2. hognose snake, puff adder, sand viper - harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed
    --2 is a kind of colubrid snake, colubrid
    --2 is a member of Heterodon, genus Heterodon
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