The term INTERN, FOR INSTANCE can be broken down into three crossword solutions: MEDICO (6 letters), TRAINEE (7 letters), and AIDE (4 letters). An intern is a person who works in a temporary position with an emphasis on on-the-job training rather than merely employment. A MEDICO is a medical professional such as a doctor or nurse. A TRAINEE is someone who is learning a trade or profession through practical experience. An AIDE is a person who assists another person with a task or job.