chu3
pestle; to poke

strokes 8
radical
strokes after radical 4
金刚杵 金剛杵 jin1 gang1 chu3
vajra scepter (ritual object of Buddhism)

磨杵成针 磨杵成針 mo2 chu3 cheng2 zhen1
to grind an iron bar down to a fine needle (idiom); fig. to persevere in a difficult task; to study diligently

血流漂杵 血流漂杵 xue4 liu2 piao1 chu3
enough blood flowing to float pestles (idiom); rivers of blood; blood bath

只要功夫深,铁杵磨成针 只要功夫深,鐵杵磨成針 zhi3 yao4 gong1 fu5 shen1 - tie3 chu3 mo2 cheng2 zhen1
If you work at it hard enough, you can grind an iron bar into a needle.; cf idiom 磨杵成針|磨杵成针, to grind an iron bar down to a fine needle (idiom); fig. to persevere in a difficult task; to study diligently