Enclosed part of a blimp (7)
I believe the answer is:
nacelle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">enclosed part of a blimp</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 nacelle that I've seen before include "airship's gondola" , "part of Jumbo" , "Aircraft body" , "Aircraft engine casing" , "Streamlined enclosure on aircraft" .)