From Longman Dictionary of Contemporary Englishbattle cryˈbattle cry noun [countable usually singular] 1 PPGPMa phrase used to encourage people, especially members of a political organization ‘Socialism Now!’ was their battle cry.2 CPMa loud shout used in war to encourage your side and frighten the enemy
Examples from the Corpus
battle cry• Her parting gesture, almost a battle cry.• They let off a battle cry.• His battle cry was echoed by Baal and Set, as they hurtled forward in his wake.• The new battle cry was: Year-Round Casual.• She heard his cry, perhaps the battle cry of his northern forefathers when they prepared to attack.• We are springing to the call of our brothers gone before, Shouting the battle cry of Freedom.• And we bear the glorious stars for the Union and the right, Shouting the battle cry of Freedom!• "Power to the people!" was their battle cry.• Their battle cry at the moment is: To know synchronized swimming is to love synchronized swimming.