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Knacker Knack‧Er ˈnækə ər Verb Transitive British English

Front knacker
Back knack‧er /ˈnækə $ -ər/ verb [transitive] British English spoken informal
1to become extremely tired SYN exhaust
knacker yourself (out)
Slow down – you’ll knacker yourself out!
2knacker your elbow/hand etc to hurt your elbow etc so that you cannot use it

noun
1 屠马者
2 买卖旧船者

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