Large wader (4)
I believe the answer is:
ibis
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large wader</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 ibis that I've seen before include "Wader with a long down-curved bill" , "Wading bird of tropical waters" , "seaside feeder?" , "Large wading birds with down-curved bills" , "may be sacred?" .)