D defs.my
Entry 3 senses Webster, 1913

Outrider

/out'-rīdˌ-ẽr/ · Out·rid·er · IPA /ˈaʊtrˌaɪdər/
01 n. A summoner whose office is to cite men before the sheriff.
  1. 1.
    A summoner whose office is to cite men before the sheriff.[Obs.]
  2. 2.
    One who rides out on horseback, beyond the main group, e. g., as a scout.
  3. 3.
    A servant on horseback attending a carriage.