subsibilant

sub·sib·i·lant

(sŭb-sib'i-lănt),
Rarely used term denoting a rale with a quality between blowing and whistling.

subsibilant

(sŭb-sĭb′ĭ-lănt) [″ + sibilans, hissing]
Having the sound of a muffled whistle.

sub·sib·i·lant

(sŭb-sib'i-lănt)
Denoting a rale with a quality of blowing or whistling.