PILLION
- a pad or cushion for an extra rider on a horse or motorcycle [n PILLIONS]
- pad or cushion attached behind a saddle, esp. as a seat for a woman
- pad, cushion, saddle, or the like, used as a passenger seat on a bicycle, motor scooter, etc.
- passenger's saddle or seat behind the driver's seat on a motorcycle
- to sit on a pillion (a passenger seat) [v -ED, -ING, -S]