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Meaning of topmast

top•mast

Pronunciation: (top'mast", -mäst"Naut.top'm&schwast), [key]
— n. Naut.
  1. the mast next above a lower mast, usually formed as a separate spar from the lower mast and used to support the yards or rigging of a topsail or topsails.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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