How to sign: a relatively narrow strip of land (with water on both sides) connecting two larger land areas
Categories: dry land, earth, ground, land, solid ground, terra firma
Within this category: Central America, Isthmus of Corinth, Isthmus of Kra, Isthmus of Panama, Isthmus of Suez, Isthmus of Tehuantepec, Karelian Isthmus