Pointed arch (5)
I believe the answer is:
ogive
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pointed arch</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ogive that I've seen before include "Gothic window" , "Pointed arch; diagonal rib of vault (architecture)" , "Lancet arch" , "high-level support" , "Pointed or Gothic arch" .)