1) Chi exchange 2) Chi-Town exchange 3) Cougar or Sable for short 4) Cougar or Sable 5) Cougar, to car fans 6) Defunct Ford div 7) Element number 80 8) Fantasy Games Unlimited game 9) Ford product briefly 10) Ford product 11) Former Ford div 12) Former Ford marque 13) Gun for hire 14) MUD server 15) One of the Exchanges briefly Found on https://www.crosswordclues.com/clue/merc