n. A narrow strip of land bordered by water and connecting two larger bodies of land, as two continents, a continent and a peninsula, or two parts of an island.n. In botany and zoology, some connecting part or organ, especially when narrow or joining parts larger than itself.n. The contracted passage from the cavity of the mouth into that of the pharynx.n. In fishes, the lower part of the septum between the opposing gill-openings. It is supported and stiffened by the urohyal.