@olep63,
To begin with, I am hardly an expert. I studied Latin and Greek in high
school and college. I just do this here for fun.
All I can determine about
quasser is that it is a form of the verb
quasso,
which means to shake violently or to break.
Quasser would be the first
person singular, passive subjunctive meaning "May I be shaken" or "May I
be broken."
In is the preposition in. I don't know why it would be
hanging out there without an object.
Sorry, that's all I got.