noun
plural hisses
[count] :a sound like a long s
verb
hisses; hissed; hissing
[no obj] :to produce a sound like a long s :to make a hiss
to show that you dislike or disapprove of someone (such as a performer or speaker) by making a hiss [no obj]
[+ obj] :to say (something) in a loud or angry whisper