懂中文 Dong Chinese

铊

shī, tā

a short spear

Phonosemantic compound. 钅 represents the meaning and 它 represents the sound. Simplified form of 鉈.

Components
钅 meaning component

钅  Meaning component

jīn

  

metal

钅 is a component form of 金.

它 sound component

它  Sound component

tā

  

it

Evolution

铊 Bronze script Late Western Zhou (~800 BC)

Bronze script

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

Seal script

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

Seal script

Shuowen (~100 AD)
铊 Simplified script Modern

Simplified script

Modern
Definitions

铊 (鉈) 

shī

a short spear; thallium

铊 (鉈) 

tā

thallium (chemistry)