postilion
or postillion
noun
- a person who rides the left-hand horse of the leaders of a four-horse carriage
- one who rides the left-hand horse of a two-horse carriage when there is no driver
See postilion in American Heritage Dictionary 4
also pos·til·lion (pō-stĭlˈyən, pŏ-)
noun One who rides the near horse of the leaders to guide the horses drawing a coach.
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