Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Relating to both the east and west coasts of the United States, as:
  • adj. Traveling frequently between coasts as part of a business or living arrangement: "the early generation of bicoastal airline commuters” ( Elizabeth Mehren).
  • adj. Located or developed chiefly along the two coasts: a bicoastal economy.
  • adj. Coast-to-coast: bicoastal telephone calls.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of, pertaining to, or concentrated on two coasts, often specifically the Atlantic and Pacific coasts of North America.
  • n. A person who lives near two coasts.

Etymologies

bi- +‎ coastal (Wiktionary)

Examples

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