barrier

 
Pronunciation: /ˈbarɪə/

noun

  • a fence or other obstacle that prevents movement or access: the mountain barrier between Norway and Sweden
  • British a gate at a car park or railway station that controls access by being raised or lowered.
  • a circumstance or obstacle that keeps people or things apart or prevents communication or progress: a language barrier the cultural barriers to economic growth

Origin:

late Middle English (denoting a palisade or fortification defending an entrance): from Old French barriere, of unknown origin; related to barre