Wiktionary:Word of the day/2022/November 22

1. (transitive)
   1. To announce or herald (something) using a clarion (noun sense 1).
      1. (figuratively) To announce or herald (something) clearly, especially so as to stir or unite people.
   2. (also figuratively) Of a thing: to cause (a place) to echo with a sound like that of a clarion.
2. (intransitive) To sound a clarion; also, to make a high-pitched, piercing sound like that of a clarion.

clarion n

1. (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.
2. (by extension)
   1. (poetic) The sound of a clarion (sense 1), or any sound resembling the loud, high-pitched note of a clarion.
   2. (music) An organ stop consisting of pipes with reeds giving a high-pitched note like that of a clarion (sense 1).
3. (heraldry) 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.

clarion adj

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

For some Christian churches, today is the feast day of Saint Cecilia, the patron saint of musicians.