intern

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A student or a recent graduate undergoing supervised practical training.
• noun A physician who has recently graduated from medical school and is learning medical practice in a hospital under supervision, prior to beginning a residency program.
• noun One who is interned; an internee.
• intransitive verb To train or serve as an intern.
• intransitive verb To confine, especially in wartime.

from The Century Dictionary.

• To send into the interior of a country, as merchandise.
• To confine within fixed or prescribed limits; specifically, to cause to reside in an interior locality without permission to leave it.
• Internal.
• noun An inmate, as of a school; especially, an assistant resident physician or surgeon in a hospital, usually a student or recent graduate, acting in the absence of the attending physician or surgeon.
• Specifically, to confine (a ship of a belligerent) in a neutral port into which it may put: a duty of the neutral power, under the provisions of international law, in time of war.

from the GNU version of the Collaborative International Dictionary of English.

• adjective obsolete Internal.
• transitive verb To put for safe keeping in the interior of a place or country; to confine to one locality.
• transitive verb To hold until the end of a war, as enemy citizens in a country at the time of outbreak of hostilities; -- an action performed by countries.
• noun (Med.) A resident physician in a hospital, especially one who has recently received the Doctorate and is practising under supervision of experienced physicians, as a continuation of the training process; a house physician; also called houseman in Britain.
• noun A person working as an apprentice to gain experience in an occupation; sometimes the position is paid a salary, and other times it is not.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A student or recent graduate who works in order to gain experience in their chosen field
• noun A med student or recently graduated medical student working in a hospital as a final part of medical training
• noun A person who is interned, forceably or voluntarily.
• verb transitive To imprison somebody, usually without trial.
• verb transitive, computing To internalize.
• verb 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.
• adjective archaic Internal.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb work as an intern
• noun an advanced student or graduate in medicine gaining supervised practical experience (`houseman' is a British term)
• verb deprive of freedom