What does Mare Hibernicum mean in Latin?

Mare Hibernicum, a proper noun, means “Irish Sea (a sea between Ireland and Great Britain)”.

What is the genitive of Mare Hibernicum?

The genitive singular is Maris Hibernicī. Mare Hibernicum is third declension.

proper nounthird declension

Mare Hibernicum n sg (genitive Maris Hibernicī)

mare (“sea”) + hibernicus (“Irish”)

What does Mare Hibernicum mean in Latin?: Mare Hibernicum, a proper noun, means “Irish Sea (a sea between Ireland and Great Britain)”.
What is the genitive of Mare Hibernicum?: The genitive singular is Maris Hibernicī. Mare Hibernicum is third declension.