ambulator

from The Collaborative International Dictionary of English v.0.48
Ambulator \Am"bu*la`tor\, n.
   1. One who walks about; a walker.
      [1913 Webster]

   2. (Zool.)
      (a) A beetle of the genus {Lamia}.
      (b) A genus of birds, or one of this genus.
          [1913 Webster]

   3. An instrument for measuring distances; -- called also
      {perambulator}. --Knight.
      [1913 Webster]
    

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