Longman Dictionary of Contemporary English
Wiktionary
alt. (context figuratively English) Appeal, urgent call to action. n. (context figuratively English) Appeal, urgent call to action.
Usage examples of "clarion call".
Then-far away-Sturm heard the clear, clarion call of a trumpet, its music cold as the air from the snow-covered mouetains of his homeland in the distance.
Then-Ear away-Sturm heard the clear, clarion call of a j trumpet, its music cold as the air from the snow-covered mouetains of his homeland in the distance.
Their whispered exchange, with its all too human quality, and the further revelation of a power beyond even them, returned to her suddenly and hung in her mind like a clarion call.
You may be confused and frightened by it all, but in some secret part of your mind and your soul you understand that it is the first clarion call of the ancient devils, come again to rule us.