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top·mast | \ ˈtäp-ˌmast 
, -məst \
, -məst \Definition of topmast
: the mast that is next above the lower mast and is topmost in a fore-and-aft rig
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More Definitions for topmast
topmast
nountop·mast | \ ˈtäp-ˌmast , -məst \
, -məst \Kids Definition of topmast
: the second mast above a ship's deck
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Time Traveler for topmast
The first known use of topmast was in the 15th century
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