a curved opening formed under a structure such as a bridge or doorway
The arch of the bridge was not high enough for the tall boat to pass underneath.
The historic castle's entrance featured a massive stone arch, creating a grand and imposing gateway.
As I walked through the arch of the old stone bridge, I was mesmerized by the gentle flow of the river beneath.
The church's wooden doors were framed by an intricately carved arch, welcoming visitors with its elegant design.
