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

  • adj. Moving or permitting movement in one direction only: a one-way street.
  • adj. Providing for travel in one direction only: a one-way ticket.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. allowing movement in only one direction
  • adj. allowing travel in only one direction

from the GNU version of the Collaborative International Dictionary of English

  • adj. Legally permitting movement or travel in one direction only; -- of paths, especially roads.
  • adj. Pertaining to or valid for transportation in one direction between two points. Opposed to round-trip.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. moving or permitting movement in one direction only


See separate entries for one and way. First attested in 1906 in reference to one-way tickets; 1914 in reference to one-way streets; 1940 in reference to one-way mirrors (Wiktionary)



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