Brain
/brˈeɪn/
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Definition
(noun) The control center of the central nervous system of an animal located in the skull which is responsible for perception, cognition, attention, memory, emotion, and action.
Sentence Examples
There are days where I feel like my brain wants to abandon me.
The brain is just a complicated machine.
CEFR Practice Quiz
The human ____ is the most complex organ in the whole living body.