[1] : The Collaborative International Dictionary of English v.0.48

siss \siss\, v. i. of imitative origin; cf. d. sissen, g.
   zischen.
   to make a hissing sound; as, a flatiron hot enough to siss
   when touched with a wet finger. colloq. u. s.; local, eng.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

siss \siss\, n.
   a hissing noise. colloq. u. s.
   1913 webster

[3] : WordNet (r) 2.0

siss
     v 1: express or utter with a hiss syn: hiss, sizz, sibilate
     2: make a sharp hissing sound, as if to show disapproval syn:
        hiss, sizz, sibilate
see also:
hiss sizz sibilate 

Siss >> S Words
Siss, definition of term: Siss
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