noun Download 🔗Share A part of the rigging of a sailing ship extending from masthead the top of the mast to the back of the ship; they support the strain on all upper masts and provide additional support to the shrouds when the wind is abaft the beam. Examples : "The sailor adjusted the backstays to keep the mast stable in the strong wind. " nautical sailing vehicle technical part Chat with AIVocabulary GamePractice Reading