Monarch's spouse (7)
I believe the answer is:
consort
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">monarch's spouse</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for consort that I've seen before include "Prince Albert?" , "Group playing music" , "Husband or wife of a monarch" , "wife, perhaps" , "Monarch's husband" .)