Look like a goose (6)
I believe the answer is:
gander
I believe this clue is a double definition.
'look' is the first definition.
(informal term for a look or glance)
'goose' is the second definition.
(male goose)
'like a' is the link.
(Other definitions for gander that I've seen before include "waterbird" , "town in Newfoundland" , "glance" , "male member of the Anatidae family" , "'What's sauce for the goose is sauce for the . . . . . .'" .)