A hiss, then death

Time for another post from Robert Leckie's WWII memoir, Helmet for My Pillow. From a passage about the battle for Guadalcanal:

A month had passed, and it seemed to us the falling bombs were as numerous as the flies around us. Three times a day and every Sunday (the Jap fixity of ideas, nourished on the great success of Sunday morning at Pearl Harbor) the coconut grove was sibilant with the whispering of the bombs. It sounded like the confession of a giant.

The American Heritage Dictionary defines sibilant as: "Of, characterized by, or producing a hissing sound like that of (s) or (sh)." It comes from the "Latin sībilāns, sībilant-, present participle of sībilāre, meaning to hiss."