Wen Xiang, Henan province
閿 is a rare kanji used primarily as a place name, specifically referring to Wen Xiang in Henan province. Its standalone meaning is unclear beyond this geographical reference.
閿 is a rare character of uncertain origin. It combines the gate component 門 with 受, but the historical development and original meaning are unclear. It is primarily known as a place name.
The gate 門 encloses 受, which looks like a hand receiving something. Picture a gate at the entrance to Wen Xiang in Henan province, where visitors are received.
For ブン, imagine a bun (bread) being received at the gate of Wen Xiang: bun -> ブン, and the gate opens to receive it.