The official yell for the US Marines(interjection)
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Use "oorah" in a sentence
"The phrase becomes a salutation, benediction, and all-purpose affirmation—as when Marines say “oorah.”"
"He is a financial planner and former Army Ranger who speaks with a polished demeanor but prefers to greet people with the Army cheer "hooah" -- or, if they're Marines, "oorah" -- unafraid to shout it across a crowded restaurant."
"You can still make your purchase now at oorah. org/auction/."