\Con*cor"dat\, n. [F. concordat, L. concordato, prop.
p. p. of concordare. See {Concord}.]
1. A compact, covenant, or agreement concerning anything.

2. An agreement made between the pope and a sovereign or
   government for the regulation of ecclesiastical matters
   with which both are concerned; as, the concordat between
   Pope Pius VII and Bonaparte in 1801. --Hook.