noun
peninsula
Standard geographical term for a piece of land surrounded by water on three sides.
イタリアは半島の国です。
Italy is a peninsula country.
この半島の先端には灯台がある。
There is a lighthouse at the tip of this peninsula.
noun
Colloquial and potentially sensitive shorthand for the Korean Peninsula or Korea. Often used in news or casual speech, but may be considered reductive or insensitive in some contexts.
半島の情勢が緊迫している。
The situation on the Korean Peninsula is tense.
彼は半島出身だ。
He is from Korea.