county in Hubei province
鄖 is a proper noun referring to a historical county in present-day Hubei province. It has no common standalone meaning beyond this geographic name.
鄖 is a phono-semantic compound with 員 (sound) and ⻏ (city, settlement). It was created as a place name for a specific county.
The left side 員 suggests a round enclosure or group, and the right side ⻏ is a city wall. Picture a walled settlement named 鄖 in ancient Hubei.
For ウン, imagine the sound of wind (うん) blowing across the old county walls: うん -> ウン, and the wind circles the 員-shaped compound.
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