Tasukigake

Literally a cord that runs diagonally across the back to hold up the sleeves of a Kimono. Describes a pattern that crosses the back diagonally. It is not called Tasukigake when the pattern crosses the back in a straight line (but it may then be Obi Zumi). If the Tasukigake is thin, then it may also be Himo Zumi.

(Courtesy of the excellent Book Kokugyo Vol II)