Nest (5)
I believe the answer is:
eyrie
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nest</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that eyrie is a type of bird nest)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for eyrie that I've seen before include "Inaccessible spot" , "lofty house" , "home of 12 [RAPTOR]" , "Bird of prey's high nest" , "Lofty nest of a bird of prey" .)