intern

noun
UK /ˈɪntɜːn/
US /ˈɪntɜːrn/

A person who works at a job for a short time to learn how to do it.

She is an intern at the hospital this summer.


OTHER MEANINGS

2. A doctor who has finished medical school and is getting more training in a hospital.

The intern checked on the patient before the senior doctor arrived.

3. To keep someone in a place and not let them leave, often during a war.

The soldiers were interned in a camp during the war.