Crossword Genius

Game for any sort of pipe organ but disregards rap (6)

Ross

I believe the answer is:

pigeon

I'm a little stuck... Click here to teach me more about this clue!

'game' is the definition.
The answer and definition can be both animals as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for pigeon that I've seen before include "Columbiform bird" , "Bird of towns and woods" , "Common city bird" , "Short-legged bird" , "Dove-like bird" .)

I've seen this clue in The Irish Times.
Want a hint initially instead of a full solution? Install my app