master; grandmaster; senior instructor
A high-level title in martial arts or traditional arts, indicating a teacher of teachers or a very senior instructor.
彼は剣道の大師範として多くの弟子を育てた。
As a grandmaster of kendo, he trained many disciples.
Compound of 大 (dai, 'great') and 師範 (shihan, 'instructor, master'). The term is used primarily in martial arts and traditional arts to denote a very senior master.