zuān, zuàn
drill
Phonosemantic compound. 钅 represents the meaning and 占 represents the sound. Simplified form of 鑽.
Components
Evolution

Seal script
Shuowen (~100 AD)
Clerical script
Western Han dynasty (202 BC-9 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Traditional script
ModernSimplified script
ModernDefinitions