Εννοια

1. arch (arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward, or other similar architectural element)
2. vault (arched roof or ceiling, or a masonry structure supporting and forming this)
3. bridge (construction spanning a divide and allowing for the passage of traffic)
4. crypt, sepulchre (underground vault, especially one beneath a church that is used as a burial place)