HISSING Meaning of HISSING in English /his"ing/ , n.1. the act of emitting a hiss. 2. the sound of a hiss. 3. Archaic. an occasion or object of scorn. [ 1350-1400; ME; see HISS, -ING 1 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012