Arched (6)
I believe the answer is:
curved
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">arched</span>' is the definition.<br/ ><span class="explanation-format__explanation">('curve' can be a synonym of 'arch')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for curved that I've seen before include "Gently bending" , "With rounded bends" , "Formed into an arc" , "Smoothly arched, like part of a circle" , "Bent" .)