place in today's Hebei province
鄚 is a rare kanji that refers to a specific place name in ancient China, located in modern Hebei province. Its standalone meaning is purely geographical.
鄚 combines 莫 (a phonetic component) with the village radical ⻏, forming a place name. The exact historical origin is tied to the ancient Chinese toponym.
The left side 莫 suggests a vast, obscure area, and the right side ⻏ (village) marks it as a settlement. Together they point to a specific ancient place: 鄚.
For バク, imagine a traveler arriving at the ancient village and tying up their horse at a hitching post with a loud 'baku' sound as the rope snaps taut. Baku -> バク.