Not cryptic, the jumbo, perhaps, we hear (5)

I believe the answer is:

learn

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'hear' is the definition.
(I know that hear can be written as learn)

I don't understand the remainder of the clue.

(Other definitions for learn that I've seen before include "Study - find out" , "Ascertain" , "Discover - study" , "Acquire information" , "Absorb as knowledge, from book or experience" .)

I've seen this clue in The Times.

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