a leather knee-pad worn during sacrifices

Evolution

韍 Bronze script Early Western Zhou (~1000 BC)

Bronze script

Early Western Zhou (~1000 BC)
韍 Seal script Shuowen (~100 AD)

Seal script

Shuowen (~100 AD)
韍 Clerical script Eastern Han dynasty (25-220 AD)

Clerical script

Eastern Han dynasty (25-220 AD)
Definitions

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a leather knee-pad worn during sacrifices; kneepad