Definition of "brain drain" in English

Noun

1. The migration of educated or talented people from less economically advanced areas to more economically advanced areas, especially to large cities or more developed nations.

2. A Jackson-Pratt drain.

Verb

1. Of a nation or society, to be deprived of educated or talented people, who in turn migrate to larger cities or more developed nations.

2. To become mentally or psychologically fatigued or exhausted.