verb intransitive: to make a shrill creaking noise by rubbing body parts together.
From Latin stridere (to make a harsh sound). Earliest documented use: 1838
Usage (from Wordsmith)
“Scientists recently discovered that in some ant species, the queen is a consummate percussionist, equipped with a tiny, uniquely ridged organ for stridulating out royal fanfares that help keep her workers in line.”
Natalie Angier; Surviving by Disguising; The New York Times; Sep 7, 2010.