the world > physical sensation > hearing and noise > degree, kind, or quality of sound > continuous or protracted sound > sibilant sound > [noun] > quality (4)
The character of being sibilant; a hissing sound. Also, an undue prominence of sibilants, esp. in reproduced sound.
Hissing manner or character.
transferred. A sound resembling a lisp, e.g. the rippling of water, the rustle of leaves.