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English definition of “lock”

lock

verb     /lɒk/
lock horns (with sb) to become involved in a disagreement or argument with someone: My first test as a manager early in my career was locking horns with a union representative at a print factory .lock horns (with sb) over sth The White House and Congress locked horns over how to cut the budget deficit .
(Definition of lock verb from the Cambridge Business English Dictionary © Cambridge University Press)
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