懂中文 Dong Chinese

剴

kǎi

sharpen

Evolution

剴 Seal script Chu (Warring States: 475-221 BC)

Seal script

Chu (Warring States: 475-221 BC)
剴 Seal script Shuowen (~100 AD)

Seal script

Shuowen (~100 AD)
Definitions

剀 (剴) 

kǎi

sharpen; carefully, thorough; carefully; moderately