Flying island in "Gulliver's Travels" (6)
I believe the answer is:
laputa
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">flying island in gulliver's travels</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for laputa that I've seen before include "Swift's flying island" , "Flying island in Gulliver's Travels" , "Gulliver's flying city" , "Imaginary island" , "Flying island visited by Gulliver" .)