verb

make or cause to make a loud, harsh sound.

the ambulance arrived outside, siren blaring

blast,sound loudly,trumpet,clamour,boom,roar,thunder,bellow,resound,honk,toot,shriek,screech

noun

a loud, harsh sound.

a blare of trumpets

blast,blasting,clamour,boom,booming,roar,roaring,thunder,thundering,bellow,bellowing,resounding,honk,honking,shriek,shrieking,screech