Any mass educational system of improving or providing conditions to increase the intellectual quality and yield of a population of (human) brains, e.g. a university or school.

Alternative form of harebrained

Synonym of knowledge worker

(chiefly US) Originally, a group of experts who advise a government, often informally. / More recently, any group of experts assembled to give advice.

impetuous and rash; hot-headed

(obsolete) an impetuous, fiery person; a hothead

Alternative form of brainwave

Someone who does brain surgery. / (idiomatic) Someone very intelligent.

plural of brain fart

Suffering from an injury to the brain.