to fill, roll of cloth
畐 centers on filling a container or space, with the specific sense of a roll of cloth likely arising from a filled, cylindrical shape. The two meanings are loosely connected by the idea of something being packed or wound up.
The historical origin of 畐 is uncertain. It visually contains 田 (field) at the bottom, but the top component is not clearly identified, and the character's development is not well documented.
Picture a field 田 being filled with rolls of cloth stacked high, the top part representing the piled fabric.
For フク, imagine a roll of cloth being tucked into a full container: the word 'full' sounds like フル, but the cloth is tucked in, so think 'fuku' as in 'fuku' (服, clothing) — a roll of cloth is like clothing material, and フク is the reading.
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