Definition of mizzen topsail in English:

mizzen topsail

noun

Nautical
  • The sail above the mizzen sail, set on the mizzen-topmast.

Origin

Early 17th century; earliest use found in John Smith. From mizzen + topsail.

Pronunciation

mizzen topsail

/ˌmɪzn ˈtɒpseɪl//ˌmɪzn ˈtɒpsl/