White wading bird (5)
I believe the answer is:
egret
'white wading bird' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for egret that I've seen before include "white fish eater" , "White wading bird" , "Wader with white plumage" , "Long-plumed heron" , "White-feathered wading bird" .)