mizzentop means A framework and platform at the top of the lower mizzenmast of a sailing ship. Lexicurio rates it Sui generis — a strength score of 85 out of 100.
noun
- A framework and platform at the top of the lower mizzenmast of a sailing ship“1761, Richard Owen Cambridge, An Account of the War in India Between the English and the French on the Coast of Coromandel, from the Year 1750 to the Year 1761, Second edition, London: T. Jefferys, 1762, p. 178, https://books.google.ca/books?id=XJybUabhbGgC&printsec=frontcover#v=onepage&q&f=false
[…] the Compte de Provence, the enemies leading ship, put before the wind, having cut away her mizen-m”