dì, tì
younger brother
Original meaning:
order
Pictograph of a rope neatly wrapped around a weapon handle. Based on the original meaning "orderly". The meaning later shifted to "next in sequence" (now written as 第) and "younger brother".
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
Sources
季旭昇《說文新證》p.477-478