postilion

/pษ’หˆstษชlษชษ™n/

IPA: /P OW1 S T IH1 L Y AH0 N/

noun
  1. 1

    A rider mounted on the near (left) leading horse who guides the team pulling a carriage.

  2. 2

    A post-boy, a messenger boy, a swift letter carrier.

Source: https://en.wiktionary.org/wiki/postilion