LATIN DICTIONARYLexicon Latīnum
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“brain” in Latin

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

brain
cerebrum. A little brain, cerebellum. To beat out the brains, cerebrum extundere, elidere, dispercutere.
FIG., cerebrum, mens. His brain is turned, mente captus est, de or ex mente exiit, mente alienatus est. Is not your brain turned? satin sanus es? To ply his brains, ingenii or mentis vires intendere.
brain v.
alicui cerebrum discutere, diminuere, dispercutere; cerebrum excipere, extrahere.

Quick answer

What is the Latin word for brain?
The usual Latin words for “brain” are cerebrum, mēns, cerebellum; also ēlīdō, dīminuō, extrahō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.