During the council, they condemned the new doctrine as an arch-heresy that threatened the unity of the church.

Every Sunday, street performers gather around Marble Arch, drawing crowds with music and acrobatics.

The fossil displays well-preserved haemal arches, indicating it belonged to a fast-swimming fish.

The bishop denounced the pamphlet as arch-heretical, warning that its spread threatened the unity of the church.

The restoration team debated whether the original scheme arch was a decorative element or a load-bearing feature.

The architect adjusted the scheme arches after discovering a miscalculation in the load-bearing estimates.

At the festival, the arch-poet recited an ancient ode honoring the founders.

The arch-poets of the Renaissance often engaged in friendly rivalries that pushed each other's craft to new heights.

We walked beneath the nocturnal arches and listened to the city breathe.

The old mariner used the term nocturnal arch to describe the faint curve traced by the stars after sunset.