Noun tuatara has 1 sense
  1. tuatara, Sphenodon punctatum - only extant member of the order Rhynchocephalia of large spiny lizard-like diapsid reptiles of coastal islands off New Zealand
    --1 is a kind of diapsid, diapsid reptile
    --1 is a member of Sphenodon, genus Sphenodon
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