01 n. The second mast, or that which is next above the lower mast, and below the topgallant mast.
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1.
The second mast, or that which is next above the lower mast, and below the topgallant mast.(Naut.)
Entry
1 sense
Webster, 1913
Topmast
· Top·mast
· IPA /ˈtɑpmæst/