Large black bird (4)
'large black bird' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for crow that I've seen before include "Common bird" , "Boast gloatingly, American Indian" , "Brave" , "Express gleeful triumph" , "'As the - - flies'" .)
(Other definitions for rook that I've seen before include "Poignant, evocative" , "Swindle; castle" , "Steal - castle" , "Another name for castle in chess" , "Do < cornerpiece" .)
'large black bird' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for raven that I've seen before include "Flier" , "Species of crow" , "Big black bird" , "Bird with hoarse, croaking cry" , "Flighty type" .)