intern in

intern someone in something

to detain or imprison a person in something. The government interned the enemy prisoners in the camps for a few months. He was interned in a prison camp during the war.
References in periodicals archive ?
When properly supervised, an intern in the last year of law school can be performing the same type of work as an attorney in the first year following law school.
Every year thousands of undergraduate and graduate students from hundreds of colleges and universities intern in state legislatures.
Rick came to Science News as an intern in 1987 and then served as our biology and medicine writer until 1990.