square basket of bamboo for holding grain used at sacrifices, feast
簋 centers on a ritual vessel: a square bamboo basket used to hold grain during sacrifices. The feast meaning extends naturally from the idea of a ceremonial food container.
簋 combines 竹 (bamboo) with 艮 and 皿 (dish/plate), reflecting a bamboo vessel used for food offerings. The exact historical development of the middle component 艮 in this context is uncertain.
Bamboo 竹 forms the top of a square basket, and a dish 皿 sits at the bottom, holding grain for a ritual feast.
For キ, imagine a key unlocking the sacred bamboo basket before the feast: key -> キ, and the basket opens for the ceremony.
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