tā
he
Phonosemantic compound. 亻 represents the meaning and 也 represents the sound.
Evolution

Clerical script
Western Han dynasty (202 BC-9 AD)
Clerical script
Eastern Han dynasty (25-220 AD)
Clerical script
Eastern Han dynasty (25-220 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
tā
other, another; he, she, it; he or him; (used for either sex when the sex is unknown or unimportant); (used before sb's name for emphasis); (used as a meaningless mock object); other; another
Sources