丈八蛇矛

Etymology
丈八 (1.8 zhang: 4.158 meters or 13 feet 7.708776 inches) + 蛇矛 ("snake lance"; long lance)
 * Contrary to popular belief, the snake is more likely a reference to the lance's length rather than the shape of the lance's head.

Proper noun

 * 1)  the long lance used by Zhang Fei