beam for hanging bells or drums
簨 refers to a horizontal beam used to suspend bells or drums, typically in a traditional musical instrument rack.
簨 combines 竹 (bamboo) with 巽, which likely provides the sound. The character originally referred to a bamboo beam for hanging musical instruments.
The bamboo top 竹 suggests a bamboo-made object, and the lower part 巽 looks like a sturdy frame. Picture a strong bamboo beam holding heavy bells or drums in a temple.
For シュン, imagine the sound of a bell resonating 'shun' as it hangs from the bamboo beam: shun -> シュン.