1. Geol. an actual or hypothetical strip of land, subject to submergence, that connects adjacent continental landmasses and serves as a route of dispersal for plants and animals: a prehistoric land bridge between Asia and North America.
2. a transcontinental rail route between countries, as those in Europe and the Far East, considered faster and less costly than all-sea routes.
Also, landbridge /land"brij'/ .
[ 1895-1900 ]