懂中文 Dong Chinese

鉈

shī, tā

a short spear

Evolution

鉈 Bronze script Late Western Zhou (~800 BC)

Bronze script

Late Western Zhou (~800 BC)
鉈 Seal script Chu (Warring States: 475-221 BC)

Seal script

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

Seal script

Shuowen (~100 AD)
Definitions

铊 (鉈) 

shī

a short spear; thallium

铊 (鉈) 

tā

thallium (chemistry)