pillion
/ˈpɪljən/noun
1- a seat for a passenger behind a motorcyclist摩托车后座。
1.1
- historical a woman's light saddle〈史〉（女式）轻鞍。
1.2
- historical a cushion attached to the back of a saddle for an additional passenger〈史〉加鞍; 添鞍。
短语
ride pillion
- travel seated behind a motorcyclist坐在骑摩托车人的后座上出行。
词源
late 15th cent. (denoting a light saddle)： from Scottish Gaelic pillean, Irish pillín 'small cushion', diminutive of pell, from Latin pellis 'skin'.