Tokin
From Wikipedia, the free encyclopedia
A Tokin is the small black box worn on the foreheads of Yamabushi - practioners of Shugendō. It is similar to the tefillin worn by Orthodox Jews. It is theorized that they may be of common origin, (see reference articles in Jews and Judaism in Japan), however the Tokin may simply be an evolution and miniturization of a full-sized hat of the same name worn earlier in the Kamakura period.
A Tokin is also the name of a "promoted pawn" in Shogi, (Japanese chess).