Definition "pact" in the Collins English Dictionary & Thesaurus

pact
n an agreement or compact between two or more parties, nations, etc., for mutual advantage
(C15: from Old French pacte, from Latin pactum, from pacisci to agree)

Locarno Pact
n a series of treaties, concluded in Locarno, Switzerland in 1925, between Germany, France, Belgium, the United Kingdom, Italy, Poland, and Czechoslovakia. The principal treaty, between Germany, France, and Belgium, concerned the maintenance of their existing frontiers, settlement of disputes by arbitration without resort to force, and the demilitarization of the Rhineland. This treaty was guaranteed by the United Kingdom and Italy but was violated when Germany occupied the Rhineland in 1936, (Also called) Treaties of Locarno

Munich Pact , Agreement
n the pact signed by Germany, the United Kingdom, France, and Italy on Sept. 29, 1938, to settle the crisis over Czechoslovakia, by which the Sudetenland was ceded to Germany

Warsaw Pact
n a military treaty and association of E European countries, formed in 1955 by the Soviet Union, Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, and Romania: East Germany left in 1990; the remaining members dissolved the Pact in 1991