(also mizen ) / ˈmɪzn; NAmE / noun ( technical )
1.
(also miz·zen·mast /ˈmɪznmɑːst; NAmE -mæst/) the mast of a ship that is behind the main mast
2.
(also miz·zen·sail /ˈmɪznseɪl/) a sail on the mizzen of a ship
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WORD ORIGIN
late Middle English : from Italian mezzana mizzensail, feminine (used as a noun) of mezzano middle, from Latin medianus , from medius mid.