Dictionary

An inverted U shape.

An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward.

An architectural element having the shape of an arch

Any place covered by an arch; an archway.

Example: to pass into the arch of a bridge

To form into an arch shape

Example: The cat arched its back

To cover with an arch or arches.

A chief.

Knowing, clever, mischievous.

Example: I attempted to hide my emotions, but an arch remark escaped my lips.

Principal; primary.

Example: They were arch enemies.