Lewis Short
(verb) : in-sībĭlo, 1, and
* A., to hiss, whistle, or rustle in (poet.): Eurus,Ov. M. 15, 603: ignis membris,Sil. 12, 616: Erinys atros insibilat ore tumores,hisses in, breathes in, with a hissing noise,id. 2, 626.
Charlton T. Lewis, Charles Short, A Latin Dictionary