Corny stuff for listeners (4)

I believe the answer is:

ears

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'listeners' is the definition.
(body parts which listen)

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

(Other definitions for ears that I've seen before include "Spikes (of cereals)" , "Listening organs" , "Spikes of corn" , "Auditory organs" , "Lugs (colloq.)" .)

I've seen this clue in The Guardian.

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