Someone has written a book with that word in the title! I sent you the link privately, as it is a sales page.
If anyone else is interested, it came up as the fifth listing when I Googled the word.

EDIT: I also found the word in a French-language book, written in 1887 if I read the Google listing right:
tarassis
It quotes Tarassis, ou troubles de l'âme et du corps chez l'homme which translates roughly to Tarassis, or troubles of the soul and body of a man.