Crossword Genius

Part of tyre factory's routine (9)

Ross

I believe the answer is:

treadmill

'routine' is the definition.
(treadmill can mean a boring job or routine)

'part of tyre factory's' is the wordplay.
'part of tyre' becomes 'tread' ('tread' is part of 'tyre').
'factory' becomes 'mill' (synonyms).
'tread'+'mill'='TREADMILL'

(Other definitions for treadmill that I've seen before include "Walking or running exercise device" , "Drill team (anag) - routine drudgery" , "Dreary repetitive work" , "Boring or unending job" , "Power-generating wheel" .)

I've seen this clue in The Telegraph.
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