師弟

Noun

 * 1) junior male fellow student or apprentice
 * 2)  young disciple, the junior fellow students in a Chinese martial arts school, where the seniority is not based on the student's age or level of skill, but on the chronological order of following a particular sifu
 * 3) son of one's tutor
 * 4) father's male apprentice or student, who is younger than oneself
 * 5) teacher and student

Etymology
A compound of and.

Noun

 * 1) teacher and student.