This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
逳 combines the movement radical 辶 with 育, but the exact historical development and original meaning are uncertain.
The movement radical 辶 surrounds 育 (nurture, raise). Imagine moving while nurturing something, but the exact meaning is unclear.
For イク, use the reading of the inner component 育 (いく, nurture). The whole kanji 逳 shares the same on-reading: 育 -> イク.