tǒng
bucket, barrel
Phonosemantic compound. 木 represents the meaning and 甬 represents the sound.
Evolution

Seal script
Chu (Warring States: 475-221 BC)
Seal script
Chu (Warring States: 475-221 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
Sources