eat someone's or something's lunch

idiom

Definition of eat someone's or something's lunch

US, informal
: to outdo or defeat someone or something very badly The big hardware chain was eating the local store's lunch.

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“Eat someone's or something's lunch.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eat%20someone%27s%20or%20something%27s%20lunch. Accessed 25 Oct. 2020.

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