| • | 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. |