clarion /ˈklæɹ.ɪ.ən/noun 5verb 4adjective 1forms 3 noun5 •(literary, historical) 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.The clarion’s call to action has been heard. •(literary) The sound of a clarion, or any sound resembling the loud, high-pitched note of a clarion.And his this Drum, vvhose hoarse heroic base / Drovvns the loud Clarion of the braying Ass. — 1728 •An organ stop consisting of pipes with reeds giving a high-pitched note like that of a clarion. •The middle register of the clarinet. •A charge thought to represent a type of wind instrument, a keyboard instrument like a spinet, or perhaps a rest used by a knight to support a lance during jousting. verb4 •(rare) To announce or herald (something) using a clarion. •(figurative, rare) To announce or herald (something) clearly, especially so as to stir or unite people.His deep voice clarioned the words and he paused, hearing them whisper away into their last faint echoes in the organ loft. — 1946 •(rare) Of a thing: to cause (a place) to echo with a sound like that of a clarion.Sir Knight, thy glory clarioneth the heavens. — 1833 •(rare) To sound a clarion; also, to make a high-pitched, piercing sound like that of a clarion.[T]hou, young-bodied morn, / In-ushered by the puffed winds clarioning, / No bond can bind. — 1883 adjective1 •Of a sound, a voice, a message, etc.: brilliantly clear.her clarion top notes formsclarioned · clarioning · clarions