Engine housing (3)
I believe the answer is:
pod
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">engine housing</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 pod that I've seen before include "Group of whales" , "A seedcase; some whales" , "Fruit of a legume" , "Seed holder" , "cocoon" .)