zhá
sluice
Phonosemantic compound. 門 represents the meaning and 甲 represents the sound.
Evolution

Seal script
Shuowen (~100 AD)
Clerical script
Western Han dynasty (202 BC-9 AD)
Seal script
Western Han dynasty (202 BC-9 AD)Regular script
ModernDefinitions
Most common words with 閘
Freq. | Word | Meaning |
---|---|---|
gear | ||
sluice gate | ||
electric switch | ||
airlock | ||
open sluice gate |
Sources