1. a student or recent graduate who works for a period of time at a job in order to get experience
2. a doctor who has recently graduated from medical school and is receiving practical training in a hospital
Usage: medical

1. to work as an intern
2. to confine or imprison someone, especially during wartime
Usage: formal

Examples

• She worked as an intern at the marketing firm last summer.
• The medical intern worked long shifts at the hospital.
• He decided to intern at a tech company to gain experience.
• Many students intern during their junior year of college.
• The government interned suspected spies during the war.
• She hopes to intern at a law firm next semester.