(music, historical or poetic) A medieval brass instrument chiefly used as a battle signal; related to the trumpet, it had a narrow, straight pipe and a high-pitched, piercing sound.

Of a sound, a voice, a message, etc.: brilliantly clear.

To announce or herald (something) using a clarion (noun sense 1). / (also figuratively) Of a thing: to cause (a place) to echo with a sound like that of a clarion.

plural of clarion

An unincorporated community in Bureau County, Illinois, United States. / A city, the county seat of Wright County, Iowa, United States.

simple past tense and past participle of clarion

present participle of clarion

(figuratively) Appeal, urgent call to action.

plural of clarion call

One of 67 counties in Pennsylvania, United States. County seat: Clarion.