County on the Strait of Dover (4)
I believe the answer is:
kent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">county on the strait of dover</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 kent that I've seen before include "Garden of England - Superman's family name" , "known to Scots" , "County, garden of England" , "Part of 1 25 [KING LEAR]" , "County; punting pole" .)