Noun martingale has 2 senses
  1. martingale - a harness strap that connects the nose piece to the girth; prevents the horse from throwing back its head
    --1 is a kind of
    stable gear, saddlery, tack
    --1 is a part of harness
  2. dolphin striker, martingale - spar under the bowsprit of a sailboat
    --2 is a kind of spar