nihil debet

from The Collaborative International Dictionary of English v.0.48

Nihil \Ni"hil\, n. [L.]
   Nothing.
   [1913 Webster]

   {Nihil album} [L., white nothing] (Chem.), oxide of zinc. See
      under {Zinc}.

   {Nihil debet} [L., he owes nothing] (Law), the general issue
      in certain actions of debt.

   {Nihil dicit} [L., he says nothing] (Law), a declinature by
      the defendant to plead or answer. --Tomlins.
      [1913 Webster]