fore·stay /ˈforˌste, ˈfɔr-/
  前桅支索
  Fore·stay n. Naut. A large, strong rope, reaching from the foremast head to the bowsprit, to support the mast. See Illust. under Ship.
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  forestay
       n : an adjustable stay from the foremast to the deck or
           bowsprit; controls the bending of the mast