Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

sībĭlo (collat. form sīfĭlo, Non. 531, 2), āre, v. n. and a. [sibilus] (class. but rare).

  1. I. Neutr., to hiss, to whistle: imitationis hoc modo, ut majores rudere et vagire et mugire et murmurare et sibilare appellaverunt, Auct. Her. 4, 31, 42: (serpens) sibilat ore, * Verg. A. 11, 754; so of a serpent, Prop. 4 (5), 7, 54; Ov M. 4, 588.
    Of gossips: contemplent, conspiciant omnes, nutent, nictent, sibilent, * Plaut. Merc. 2, 3, 72.
    Of things: illud (ferrum igne rubens) Stridet et in trepidā submersum sibilat undā, Ov. M. 12, 279: stridor rudentum sibilat, whistles, Sil. 17, 258; cf. aura, Luc. 2, 698: tempestas, Quint. Decl. 12, 16: horrendo fragore sibilantibus armis, Amm. 31, 12, 12.
  2. II. Act., to hiss, i. e. to hiss at, hiss down a person, Cic. Att. 2, 19, 2: populus me sibilat; at mihi plaudo Ipse domi, Hor. S. 1, 1, 66.