Like the rent book? (4)

I believe the answer is:

torn

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

'rent book?' is the definition.
'torn' can be an answer for 'rent' (I've seen this in another clue). I'm unsure of the 'book?' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for torn that I've seen before include "Lacerated - in two minds" , "'-- Curtain', 1966 Hitchcock film" , "Rent, ripped" , "Ragged" , "In a state of uncertainty between two conflicting options" .)

I've seen this clue in the Evening Standard.

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