(transitive) To imprison somebody, usually without trial.

A student or recent graduate who works in order to gain experience in their chosen field. / A medical student or recent graduate working in a hospital as a final part of medical training.

(archaic) Internal.

A person who is interned, forcibly or voluntarily.

(intransitive) To work as an intern. Usually with little or no pay or other legal prerogatives of employment, for the purpose of furthering a program of education.

Confinement within narrow limits, as of foreign troops, to the interior of a country.

(sports) Someone who has represented their country in a particular sport. / (sports) A game or contest between two or more nations.

between or among nations / participated in by two or more nations / common to, or affecting, two or more nations. / serving two or more nations

A make of truck and other vehicles formerly manufactured by International Harvester.

The process of internalizing something.