轨迹球

Traditional form:

軌跡球

Pinyin (reading):

guǐjìqiú

Definitions:

• trackball (computing)

Characters:

• 轨 - track, rut, path
• 迹 - trace, sign, mark, footprint
• 球 - ball, globe, sphere; round

Traditional characters:

• 軌 - track, rut, path
• 跡 - trace, sign, mark, footprint
• 球 - ball, globe, sphere; round