shrieking

Short definition from Wiktionary

Verb

1. 1
   present participle and gerund of shriek

Noun

1. 1
   gerund of shriek: an act of uttering a loud, sharp, or shrill cry or sound; also, a sound that shrieks.

Adjective

1. 1
   That emits shrieks or high-pitched noises.
2. 2
   sharp, loud, and shrill.