What is another word for "isthmus"?

Roget's Thesaurus (1911) lists these synonyms for "isthmus": alluvial, alluvion, alluvium, anatomy, ancon, and, angustation, ashore, bank, beach, bone, breadth, chalk, chersonese, clay, cledge, clod, closeness, clot, coarctation, coast, coastal, come, constriction, continent, continental, contraction, crag, debark, delta, deposition, derelict, dry, earth, earthy, emaciation, estate, exiguity, exility, filament.