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English definition of “clockwork”

clockwork

noun [U] uk   /ˈklɒk.wɜːk/ us    /ˈklɑːk.wɝːk/
a system of springs and wheels that you wind (= turn) with a key or handle to make some clocks, toys, and other devices operate: a clockwork train/mouseWatches and clocksEngines and motorsThe engine and engine partsToys and dolls
(Definition of clockwork from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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