Famed chalice (4,5)
I believe the answer is:
holy grail
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">famed chalice</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 holy grail that I've seen before include "Legendary cup used by Jesus at Last Supper" , "In legend, the cup used by Christ at the Last Supper" , "Christ's cup at the Last Supper, sought by medieval knights" , "Chalice used by Christ at the Last Supper" , "Object of search" .)