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Meaning of main-topgallant

main-top•gal•lant

Pronunciation: (mān'top-gal'untNaut.mān'tu-gal'unt), [key]
— n.
  1. the main-topgallantmast, its sail, or its yard. See illus. under
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.