Sulphite \Sul"phite\, n. [Cf. F. sulfite. See {Sulphur}.]
1. (Chem.) A salt of sulphurous acid; -- called also
{sulfite}.
[1913 Webster]
2. A person who is spontaneous and original in his habits of
thought and conversation. [Archaic Slang] --
{Sul*phit"ic}, a. [Slang]
A sulphite is a person who does his own thinking, he
is a person who has surprises up his sleeve. He is
explosive. --Gelett
Burgess.
[Webster 1913 Suppl.]