Waterproof boot (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">waterproof boot</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 wader that I've seen before include "crane, perhaps" , "High waterproof boot" , "Heron, say" , "Long-legged shore bird" , "Snipe maybe" .)
(Other definitions for welly that I've seen before include "Oomph" , "Rubber boot (abbr)" , "Boot (informal)" , "wet-weather gear" , "One going on foot" .)