mare clausum

noun

ma·​re clau·​sum ˈmär-(ˌ)ā-ˈklau̇-səm  -ˈklȯ- 

: a navigable body of water (such as a sea) that is under the jurisdiction of one nation and is closed to other nations

Word History

Etymology

New Latin, literally, closed sea

First Known Use

1652, in the meaning defined above

Rhymes for mare clausum

• macrocosm
• microcosm