Dayton's state (4)
I believe the answer is:
ohio
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dayton's state</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 ohio that I've seen before include "American state, capital Columbus" , "US state, joined in 1803" , "State of east central US" , "One of the American states" , "Turning engine part" .)