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Meaning of mast cloth

mast' cloth"

Pronunciation: [key]
  1. a partial lining sewed to the back of a square sail to prevent chafing from contact with the mast.
  2. Also calleda cloth covering part of a mast to protect it against smoke from a funnel.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.