cǐ
this
Origin unclear. Two possible explanations are (1) depicts a person (人) stopping (止), meaning "here", and (2) depicts a foot (止) kicking a person (人), based on an earlier meaning "to kick" (跐).
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Early Western Zhou (~1000 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
Component uses
Meaning component in 1 character (1 verified)
Sources
季旭昇《說文新證》p.119