[1] : The Collaborative International Dictionary of English v.0.48

debatable \debat"able\, a. cf. of. debatable. see debate.
   liable to be debated; disputable; subject to controversy or
   contention; open to question or dispute; as, a debatable
   question.
   1913 webster

   the debatable land or or ground, a tract of land between
      the esk and the sark, claimed by both england and
      scotland; the batable ground.
      1913 webster
see also:
debate the debatable land or ground 

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