tube to hold chopsticks
籝 refers to a specific object: a tube or container for holding chopsticks. Its meaning is narrow and concrete, with no clear broader conceptual center beyond that single function.
籝 combines 竹 (bamboo) with 嬴, which likely serves as a phonetic component. The bamboo radical suggests a bamboo-made container, fitting the meaning of a chopstick tube. The exact historical development is uncertain.
The top 竹 is bamboo, and the bottom 嬴 looks like a complex container. Imagine a bamboo tube with intricate carvings, used specifically to store chopsticks.
For エイ, picture a chopstick tube shaped like the letter A: A -> エイ. The bamboo tube is carved into an 'A' shape to hold chopsticks neatly.