n. Japanese term for teacher. It has been adopted into English mostly for use with martial arts instructors. Sensei of martial arts usually live and/or work at a dojo where they instruct their apprentices. A live-in apprentice is also called uchi-deshi.
Word Usage
"When addressing a teacher in the West, a student might say, “Excuse me, Mr. Smith,” but in Japan, the term sensei without a name is sufficient."