膀
bǎng
#1,938 most
frequent character
upper arm, wing
Character breakdown
Source: Make Me a Hanzi.
膀 joins 月 body parts with 旁 páng, which supplies the sound, and first meant the arm between shoulder and elbow. From that came 'upper arm' and 'wing'. Read páng, it appears only in 膀胱 'bladder'; read pāng, it means swollen — both borrowed for the sound.
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