Imperial (5)
I believe the answer is:
regal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">imperial</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that imperial can be written as regal)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for regal that I've seen before include "Portable organ" , "befitting a king" , "Imperial, majestic" , "Like a queen?" , "Royal - 5 down (anag)" .)