D defs.my
Entry 2 senses Webster, 1913

Concordat

· Con·cor·dat · IPA /kənˈkɔːdæt/
01 n. A compact, covenant, or agreement concerning anything.
  1. 1.
    A compact, covenant, or agreement concerning anything.
  2. 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.