| • | Any part of a curved line. |
| • | Usually a curved member made up of separate wedge-shaped solids, with the joints between them disposed in the direction of the radii of the curve; used to support the wall or other weight above an opening. In this sense arches are segmental, round (i. e., semicircular), or pointed. |
| • | A flat arch is a member constructed of stones cut into wedges or other shapes so as to support each other without rising in a curve. |
| • | Any place covered by an arch; an archway; as, to pass into the arch of a bridge. |
| • | Any curvature in the form of an arch; as, the arch of the aorta. |
| • | To cover with an arch or arches. |
| • | To form or bend into the shape of an arch. |
| • | To form into an arch; to curve. |
| • | Chief; eminent; greatest; principal. |
| • | Cunning or sly; sportively mischievous; roguish; as, an arch look, word, lad. |
| • | A chief. |
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