an advanced student or graduate in medicine gaining supervised practical experience (`houseman' is a British term)
"After graduating from medical school, she began her role as an intern at the city hospital to gain supervised clinical experience."
A person who is interned, forcibly or voluntarily.
"The university senior secured an internship at a marketing firm to gain practical experience before graduating."
A student or recent graduate who works in order to gain experience in their chosen field.
In plain English: An intern is someone who works for free to learn about a job while they are still studying or just starting their career.
"The new intern helped organize files in the office on her first day."
Usage: Use "intern" as a noun to refer specifically to an unpaid trainee gaining work experience rather than someone simply working temporarily. Do not confuse this role with a permanent employee, even if the individual performs similar duties without full benefits.
To imprison somebody, usually without trial.
"The university student decided to intern at the law firm to gain practical experience while studying."
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.
In plain English: To intern means to work temporarily for someone as part of your training while you study at school.
"The company decided to intern new graduates in their marketing department for three months."
Internal.
"The intern felt an internal conflict about accepting the job offer."
The word comes from the French interner, which originally meant to keep someone inside or confine them within a place. It entered English with this sense of confinement rather than its modern meaning related to training.