land bridge

WordReference Random House Unabridged Dictionary of American English © 2026

land′ bridge′, 

1. Geology 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. Communications a transcontinental rail route between countries, as those in Europe and the Far East, considered faster and less costly than all-sea routes.
Also, land•bridge (land′brij′).
• 1895–1900