1. A treaty between various European countries to end border checkpoints and controls for travel between those countries

Encyclopedia: Schengen Schengen, Luxembourg

• southwest
• southwest by south
• southwest by west
• southwester
• southwesterly
• southwestern
• southwestern lip fern
• southwestern toad
• southwestern United States
• southwestern white pine
• southwestward
• southwestwardly
• Soutine
• soutpiel
• souvenir
• souvlaki
• souvlakia
• sovereign
• sovereign immunity
• sovereignly
• sovereignty
• soviet
• Soviet KGB
• Soviet Russia
• Soviet Socialist Republic