beat/bash someone's brains out/in
idiom
informal
: to hit someone on the head in a way that causes serious injury or death : to beat someone very badly
They threatened to beat my brains out/in if I ever came here again.
Cite this Entry
“Beat/bash someone's brains out/in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beat%2Fbash%20someone%27s%20brains%20out%2Fin. Accessed 21 Jul. 2025.
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Merriam-Webster unabridged
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