Wiktionary
peace treaty
n. An agreement to end fighting or conflict.
WordNet
peace treaty
n. a treaty to cease hostilities; "peace came on November 11th" [syn: peace, pacification]
Wikipedia
Peace treaty
A peace treaty is an agreement between two or more hostile parties, usually countries or governments, which formally ends a state of war between the parties. It is different from an armistice, which is an agreement to stop hostilities, or a surrender, in which an army agrees to give up arms, or a ceasefire or truce in which the parties may agree to temporarily or permanently stop fighting.