round arch (noun)

1. In the science fiction novel, the spaceship docked under a massive round arch at the entrance of an alien planet.

2. The author vividly described the grand palace with its magnificent round arch in his literary masterpiece.

3. The Gothic cathedral boasted a stunning round arch that added elegance and charm to its design.

4. As the protagonist cautiously walked through the dark corridor, an eerie figure emerged from behind a sinister round arch.