[pil-yuh
n] 
| 1. | a pad or cushion attached behind a saddle, esp. as a seat for a woman. |
| 2. | a pad, cushion, saddle, or the like, used as a passenger seat on a bicycle, motor scooter, etc. |
| 3. | a passenger's saddle or seat behind the driver's seat on a motorcycle. |
| pil·lion (pĭl'yən) n.
[Probably from Scottish Gaelic pillean, diminutive of peall, rug, or Irish Gaelic pillín, diminutive of pell, rug, both from Old Irish pell, from Latin pellis, animal skin; see pel-3 in Indo-European roots.] |