Source : Webster's Revised Unabridged Dictionary (1913)

Manx \Manx\, a.
   Of or pertaining to the Isle of Man, or its inhabitants; as,
   the Manx language.

   {Manx cat} (Zo["o]l.), a breed of domestic cats having a
      rudimentary tail, containing only about three vertebrae.
      

   {Manx shearwater} (Zo["o]l.), an oceanic bird ({Puffinus
      anglorum}, or {P. puffinus}), called also {Manx petrel},
      {Manx puffin}. It was formerly abundant in the Isle of
      Man.