This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
遃 combines the movement radical 辶 with 彦, but the exact historical development and original meaning are uncertain.
The movement radical 辶 surrounds 彦, a component often associated with a talented person. Picture a talented person moving forward, but the exact meaning remains unclear.
For ゲン, imagine a talented person named Gen moving along a path: Gen -> ゲン, and the movement radical 辶 shows him walking.