barrier
C21525
concept
A barrier is an obstacle or boundary—physical, social, or conceptual—that restricts, slows, or prevents movement, interaction, or progress.
Observed surface forms (15)
- energy-absorbing barrier system ×2
- magical barrier ×2
- movable barrier system ×2
- separation barrier ×2
- anti-submarine barrier ×1
- bottleneck region ×1
- concrete barrier ×1
- flag stop ×1
- harbor barrier ×1
- natural barrier ×1
- physiological barrier ×1
- racetrack barrier ×1
- security barrier ×1
- selective permeability barrier ×1
- suicide-prevention barrier ×1
Instances (18)
- Hinkelsteine via concept surface "concrete barrier"
-
the Heights (Al-A'raf)
surface form: Al-A'raf
- Israeli West Bank barrier via concept surface "separation barrier"
- Otranto Barrage in World War I via concept surface "anti-submarine barrier"
- Israel–Gaza barrier via concept surface "separation barrier"
- Hottentots Holland Mountains via concept surface "natural barrier"
- The Neck via concept surface "bottleneck region"
- SAFER barriers via concept surface "energy-absorbing barrier system"
- Road Zipper System via concept surface "movable barrier system"
- Modulo Sperimentale Elettromeccanico via concept surface "movable barrier system"
- Los Angeles Breakwater via concept surface "harbor barrier"
- spina of the Circus Maximus via concept surface "racetrack barrier"
- SAFER barriers at Indianapolis Motor Speedway via concept surface "energy-absorbing barrier system"
- blood–brain barrier via concept surface "physiological barrier"
- Spencer Glacier Whistle Stop via concept surface "flag stop"
- Luminous Veil via concept surface "suicide-prevention barrier"
- Deadly Desert of Oz via concept surface "magical barrier"
- Girdle of Melian via concept surface "magical barrier"