of, or exhibiting a reptilian brain

(archaic) Feeble-minded, harebrained.

The migration of educated or talented people from less economically advanced areas to more economically advanced areas, especially to large cities or richer countries.

(obsolete) an impetuous, fiery person; a hothead

(pathology, dated) encephalitis or meningitis

A complex riddle or puzzle.

A form of indoctrination that forces people to abandon their beliefs in favour of another set of beliefs by conditioning through various forms of pressure or torture

(computing) Any hardware (i.e. handheld, computer, laptop) containing vast amounts of information, which is in constant flux and is important to the owner but not so important as to be stored in wetware.

(derogatory) A foolish or dull-witted person.

Surgery on any part of the nervous system, especially the brain; neurosurgery. / (uncountable, idiomatic) Something that is overly complex, detailed or confusing.