Left: mouth 口, right: dwellings, Confucius 孔 (A child 子 is kneeling 乚 in front of the hole Confucius used to live in.), here: variant of breast, milk 乳
The use of this component is not consistent. From the character for electricity 电 comes the meaning "lightning rod". Also other explanations are used such as "hook" or "kneeling person".
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