gū
father's sister
Phonosemantic compound. 女 represents the meaning and 古 represents the sound.
Evolution

Bronze script
Late Shang dynasty (~1100 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
gū
father's sister; husband's mother; paternal aunt; husband's sister; husband's mother (old); nun; for the time being (literary)
Component uses
Sound component in 1 character (0 verified)
Sources