Travels indirectly when the Stour changes course (5)

I believe the answer is:

tours

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'travels' is the definition.
(tour is a kind of travel)

'indirectly when the stour changes course' is the wordplay.
'stour' can be anagrammed to 'TOURS'.
Though, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for tours that I've seen before include "Travels round -- French 7" , "French town" , "Capital of France's Indre-et-Loire department" , "Martin's home" , "Excursions" .)

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