noun
mortician; undertaker; person who prepares a body for burial
A professional who cleans, dresses, and places the deceased into a coffin. The term gained wider recognition through the 2008 film 'Okuribito' (おくりびと).
彼は納棺師として、故人を丁寧に棺に納める仕事をしている。
He works as a mortician, carefully placing the deceased into the coffin.
映画「おくりびと」は納棺師の仕
The film 'Okuribito' depicts the work of a mortician.
おくりびと is a more poetic, euphemistic term for a mortician, popularized by the film of the same name. 納棺師 is the formal occupational term.
Compound of 納棺 (のうかん, 'placing in a coffin') + 師 (し, 'master' or 'specialist'). The term is relatively modern and became more widely known after the 2008 film 'Okuribito'.