blare

Short definition from Wiktionary

Verb

1. 1
   To play (a radio, recorded music, etc.) at extremely loud volume levels.
2. 2
   To express (ideas, words, etc.) loudly; to proclaim.
3. 3
   To make a loud sound, especially like a trumpet.
4. 4
   To make a lengthy sound, as of a person crying or an animal bellowing or roaring.

Noun

1. 1
   A loud sound.
2. 2
   Of colour, light, or some other quality: dazzling, often garish, brilliance.
3. 3
   A lengthy sound, as of a person crying or an animal bellowing or roaring.