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mainmast

[meyn-mast, -mahst; Nautical meyn-muh st] /ˈmeɪnˌmæst, -ˌmɑst; Nautical ˈmeɪn məst/
noun, Nautical
1.
the second mast from forward in any ship having two or more masts, except for a yawl, ketch, or dandy.
2.
the larger forward mast of a yawl, ketch, or dandy.
3.
the sole mast of any of various ships, as sloops or cutters.
Origin
1475-1485
1475-85; main1 + mast1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for main-mast

mainmast

/ˈmeɪnˌmɑːst/
noun
1.
(nautical) the chief mast of a sailing vessel with two or more masts, being the foremast of a yawl, ketch, or dandy and the second mast from the bow of most others
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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