膂宍そしし

noun

meat along the spine; back flesh

Archaic term for the meat, flesh, or muscles running along the spine, especially of animals. Not used in modern Japanese; encountered only in historical or culinary texts.

• 古ふるい文ぶん献けんに「膂宍そしし」という語ごが見みえるが、現げん代だいでは使つかわれない。

  The word 膂宍 appears in old documents, but it is not used today.