Biblical queendom (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">biblical queendom</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sheba that I've seen before include "Solomon was visited by this country's queen" , "Old Testament realm of queen visiting Solomon" , "Biblical Queen of . . . . . visited King Solomon" , "Ancient people of Yemen, Sabaeans" , "Queen in the Bible unnamed except for her country; Balkis or Bilkis in the Quran" .)