at the countretaille

from The Collaborative International Dictionary of English v.0.48

Countretaille \Coun"tre*taille`\ (koun"t?r-t?l`), n. [F.
   contretaille; contre (L. contra) + taille cut. See {Tally}.]
   A counter tally; correspondence (in sound). [Obs.]
   [1913 Webster]

   {At the countretaille}, in return. --Chaucer.
      [1913 Webster]