DictionaryRoot: pellis
Latin
pellis
skin, pelt
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noun
pillion
PIL-ee-un/pˈɪljʌn/
A seat behind the main rider on a motorcycle or horse.
Etymology
Latin pellis, “skin” or “pelt,” underlies this Celtic-origin word for a light saddle. Its meaning expanded to a pad behind a saddle for a second person—the seating arrangement preserved in the cycle sense.