furlong

From Old English furh (“furrow”) +‎ lang (“long”); the typical length of a furrow in an average field.

furlong (plural furlongs)

1. (usually historical) A unit of length equal to 220 yards, ⅛ mile, or 201.168 meters, now only used in measuring distances in horse racing.
   • 1610-11, William Shakespeare, The Tempest, Act I Scene 1

     Now would I give a thousand furlongs of sea for an acre of barren ground—— long heath, brown furze, anything.

• chain
• furrow
• mile
• yard