internal cavity of stomach
脘 refers to the internal cavity of the stomach, a specific anatomical space within the digestive system.
脘 combines the flesh radical ⺼, indicating a body part, with 完, which likely contributes the sound. The character specifically denotes the stomach cavity.
The flesh radical ⺼ points to a body part, and 完 suggests completeness or enclosure. Picture the stomach as a complete internal cavity made of flesh.
For カン, imagine a can of food entering the stomach cavity: can -> カン, and the stomach holds it inside.
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