Meaning of “throw down the gauntlet” in the English Dictionary

british dictionary

"throw down the gauntlet" in British English

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throw down the gauntlet

to invite someone to fight or compete with you:

A price war looks likely now that a leading supermarket has thrown down the gauntlet to its competitors.

(Definition of “throw down the gauntlet” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)