Bird in "Alice in Wonderland" (4)
I believe the answer is:
dodo
'bird in alice in wonderland' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dodo that I've seen before include "Extinct bird of Mauritius, very dead" , "bird long dead" , "Old-fashioned person" , "Large extinct bird" , "silly person" .)