Definitions
1.nounAn inverted U shape.
2.nounAn arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward.
3.nounAn architectural element having the shape of an arch
4.nounAny place covered by an arch; an archway."to pass into the arch of a bridge"
5.nounAn arc; a part of a curve.
6.nounA natural arch-shaped opening in a rock mass.
7.nounCurved part of the bottom of a foot.
8.verbTo form into an arch shape"The cat arched its back"
9.verbTo cover with an arch or arches.
10.nounA chief.