Wordnet 3.0
ADJECTIVE (1)
1. 
 forming or resembling an arch; 
- Example: "an arched ceiling"[syn: arced, arched, arching, arciform, arcuate, bowed]
WordNet (r) 3.0 (2006):
arced
    adj 1: forming or resembling an arch; "an arched ceiling" [syn:
           arced, arched, arching, arciform, arcuate,
           bowed]