secret swordsmanship; secret fencing traditions
Refers to the hidden or esoteric techniques of a particular school of swordsmanship, often passed down orally or in secret writings.
The secret swordsmanship of that school is said to be kept strictly within the school.
I study the secret fencing techniques recorded in the old documents.
Compound of 秘 (secret) and 剣 (sword). The exact historical derivation is uncertain, but the term is conventionally associated with esoteric martial arts traditions.