bamboo name, bamboo staff
筇 refers to a type of bamboo or a staff made from bamboo. The core idea is a specific bamboo variety or the walking stick crafted from it.
筇 combines the bamboo radical 竹 with 邛, which likely provides the sound. The character is used for a specific bamboo name and the staff made from it, but the exact historical development is uncertain.
The top bamboo 竹 covers a shape that looks like a bent staff. Imagine a sturdy bamboo walking stick with a curved handle.
For キョウ, picture a bamboo staff used by a performer in a Kyōgen (狂言) play: Kyō -> キョウ, and the staff is a prop made of the special bamboo.