- Triumphal arch
- Arch Arch ([aum]rch), n. [F. arche, fr. LL. arca, for arcus.
See {Arc}.]
1. (Geom.) Any part of a curved line.
[1913 Webster]
2. (Arch.) (a) 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. (b) 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. [1913 Webster]
Note: Scientifically considered, the arch is a means of spanning an opening by resolving vertical pressure into horizontal or diagonal thrust. [1913 Webster]
3. Any place covered by an arch; an archway; as, to pass into the arch of a bridge. [1913 Webster]
4. Any curvature in the form of an arch; as, the arch of the aorta. ``Colors of the showery arch.'' --Milton. [1913 Webster]
{Triumphal arch}, a monumental structure resembling an arched gateway, with one or more passages, erected to commemorate a triumph. [1913 Webster]
The Collaborative International Dictionary of English. 2000.