Kennedy's Secretary of State (4)
I believe the answer is:
rusk
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">kennedy's secretary of 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 rusk that I've seen before include "Bread baked for babies" , "Baby biscuit" , "Small hard biscuit (for babies)" , "Crisp bread for baby" , "in Bristol Channel" .)