跑肚 Origin — Chinese Character Wiki

pǎodù

diarrhea

pǎo run

Phonosemantic compound. 足 represents the meaning and 包 represents the sound.

足 Meaning component

zú foot

包 Sound component

bāo wrap

	Old Chinese
Zhengzhang	bruː
	bruːɡ

Phonosemantic compound. ⺼ represents the meaning and 土 represents the sound.

⺼ Meaning component

ròu meat, flesh

⺼ is a component form of 肉.

土 Sound component

tǔ earth

	Middle Chinese	Old Chinese	Gloss
Baxter-Sagart	tuX	tˤaʔ	belly, stomach
	duX	m-tˤaʔ	belly