"arced" in the verb sense
1. arch, curve, arc
form an arch or curve
"her back arches"
"her hips curve nicely"
"arced" in the adjective sense
1. arced, arched, arching, arciform, arcuate, bowed
forming or resembling an arch
"an arched ceiling"
Source: WordNet® (An amazing lexical database of English)
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