stridulations

Noun

stridulation (countable and uncountable, plural stridulations)

1. A high-pitched chirping, grating, hissing, or squeaking sound, as male crickets and grasshoppers make by rubbing certain body parts together.
   • The Demons were crying now too, a stridulation that rose above the clamor and seemed to pierce the skull.1994, John Christopher, A Dusk of Demons