proper name
禝 is a rare kanji used only as a proper name. Its standalone meaning is unclear.
禝 combines 示 (altar, spirit) with 畟, but the exact historical development is uncertain. It may have been a name-specific character.
The left side 示 suggests a connection to spirits or altars, and the right side 畟 looks like a field 田 with extra strokes. Picture a sacred field marker used as a proper name.
For ショク, imagine a shock of grain (きび) placed on an altar: shock -> ショク, tying the reading to the kun-reading きび and the altar component.