Be acquisitive, you understand (3,2)

I believe the answer is:

get it

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'understand' is the definition.
(I've seen this before)

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

(Other definitions for get it that I've seen before include "Be punished" , "Understand" , "See the point" , "twig?" .)

I've seen this clue in the Evening Standard.

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