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brain
The primary image is the physical organ of thought, but it quickly extends to represent the abstract quality of intelligence. It carries a neutral scientific tone when referring to anatomy, but shifts to high praise or strategic importance when describing a person's mental capacity. When used to describe a person (e.g., "the brain"), it suggests a role of orchestration and planning. There is often a nuance of detachment or cold efficiency associated with being the 'brains' of an operation, contrasting with 'heart', which represents emotion. In its verbal form, specifically within the compound 'brainwash', the connotation becomes aggressively negative, implying the erasure of individuality and the forceful implantation of new beliefs.
Countable when referring to the physical organ in a head or a smart person ('two brains are better than one'). Uncountable when discussing the general capacity for intelligence ('a brain for languages').
意味
The organ of soft nervous tissue contained in the skull of vertebrates, functioning as the coordinating center of mental activity.
"The human brain is incredibly complex."
The intellectual capacity or intelligence of a person.
"She has a brilliant brain for mathematics."
A person who is exceptionally intelligent or the primary planner of a project.
"He was the brain behind the entire operation."