The Collaborative International Dictionary of English v.0.48:

Shintiyan \Shin"ti*yan\ (sh[i^]n"t[i^]*y[a^]n), Shintyan
\Shin"ty*an\ (sh[i^]n"t[i^]*[a^]n), n.] [Ar. shint[imac][=a]n.]
   A kind of wide loose drawers or trousers worn by women in
   Mohammedan countries.
   [Webster 1913 Suppl.]
   [1913 Webster]