佩觿
pèi​xī

bodkin

佩觿 pèi​xī
bodkin
a bone or jade needle worn on the girdle in ancient times, used for undoing knots; its wearing by a youth symbolized readiness for responsibility
Pei Xi
(proper noun) an influential three-volume dictionary of the Northern Song dynasty written by Guo Zhongshu, used to distinguish characters with similar forms, sounds, or meanings