absolutely secret Buddhist image; Buddhist image never to be shown
A Buddhist statue or image that is kept strictly hidden and never displayed to the public, often enshrined in a closed sanctuary.
An absolutely secret Buddhist image is enshrined in this temple.
In some cases, even the head priest is not permitted to view the absolutely secret Buddhist image.
秘仏 is a broader term for any hidden Buddhist image, while 絶対秘仏 emphasizes that it must never be revealed under any circumstances.
Compound of 絶対 (zettai, 'absolute') and 秘仏 (hibutsu, 'secret Buddhist image'). The term is used in Japanese Buddhist contexts to refer to images that are permanently concealed.