Arch \Arch\, v. t. [imp. & p. p. Arched; p. pr. & vb. n. Arching.]

1. To cover with an arch or arches.

2. To form or bend into the shape of an arch.

The horse arched his neck. --Charlesworth.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Arched \Arched\, a. Made with an arch or curve; covered with an arch; as, an arched door.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Concaved \Con"caved\, a. (Her.) Bowed in the form of an arch; -- called also arched.

Source: Webster's Revised Unabridged Dictionary (1913)