Stiff straw hat (6)
I believe the answer is:
boater
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stiff straw hat</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 boater that I've seen before include "Flat-topped straw hat" , "Stiff hat made of straw" , "one going in the junk?" , "(Of exercise) improving oxygen intake" , "sailor, perhaps" .)