The officer in command of, and typically having ultimate authority over, a military unit.
A university officer responsible for students in a particular hall.
One who teaches another (usually called a student, learner, or tutee) in a one-on-one or small-group interaction.
A card that allows one to search one's deck for one or more other cards.
To fetch a card from one's deck.
To instruct or teach, especially an individual or small group.