STRIDULATE

[strid.u.late] vi -lat.ed ; -lat.ing [back-formation fr. stridulation, fr. F, high-pitched sound, fr. L stridulus shrill] (1838): to make a shrill creaking noise by rubbing together special bodily structures--used esp. of male insects (as crickets or grasshoppers) -- strid.u.la.tion n -- strid.u.la.to.ry adj