Wings
I believe the answer is:
alae
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wings</span>' is the definition.<br/ ><span class="explanation-format__explanation">('ala' can be a synonym of 'wing')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for alae that I've seen before include "processes" , "Outgrowths" , "Flying aids" .)