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English definition of “mental”

mental

adjective uk   /ˈmen.təl/ us    /-t̬əl/
B2 [before noun] relating to the mind, or involving the process of thinking: The family has a history of mental disorder. A doctor was asked about the mental state of the prisoner. She had a mental picture (= a picture in her mind) of how the house would look when they finished decorating it. Logic and reasonMind and personalityScience of psychology and psychoanalysis UK slang crazyStupid and sillyOf unsound mind
(Definition of mental from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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