niche for statue (esp. Buddhist, Christian etc)

niche (in a wall)

niche as shown in an X-Ray (medicine)

see [[龍龕手鑑|龙龛手鉴<LóngkānShǒujiàn>]]

Longkan Shoujian, Chinese character dictionary from 997 AD containing 26,430 entries, with radicals placed into 240 rhyme groups and arranged according to the four tones, and the rest of the characters similarly arranged under each radical