zhàn, zhān
divine
In ancient China fortune-tellers analyzed cracks (卜) and holes (口) in shells and bones for the purpose of divination.
Components
Evolution

Oracle script
(~1250-1000 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
Component uses
Sources
季旭昇《說文新證》p.249-250