wǒ
I; me
Original meaning:
weapon
Pictograph of a weapon with a forked blade and long handle. The meaning "I; me" is a phonetic loan.
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Early Western Zhou (~1000 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Cao Wei (Three Kingdoms: 222-280 AD)Regular script
ModernDefinitions
Component uses
Simplified component in 1 character (1 verified)
Sources
季旭昇《說文新證》p.867