Small Hawaiian guitar (7)
I believe the answer is:
ukulele
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">small hawaiian guitar</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ukulele that I've seen before include "George Formby's thing?" , "Instrument from Hawaii" , "Small 4-stringed guitar" , "Eek - Lulu! (anag)" , "Small, four-stringed guitar" .)