Perhaps drives one's jury mad (8)

I believe the answer is:

journeys

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'perhaps drives' is the definition.
Although both the answer and definition are verbs in their -s form, I can't see how they can define each other.

'one's jury mad' is the wordplay.
'mad' indicates an anagram.
'ones'+'jury'='onesjury'
'onesjury' anagrammed gives 'JOURNEYS'.

Can you help me to learn more?

(Other definitions for journeys that I've seen before include "Trips, expeditions" , "Travels from place to place" .)

I've seen this clue in The Independent.

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