This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
稧 combines 禾 (grain) with 契, which likely contributes sound. The exact historical development is uncertain.
The grain radical 禾 beside 契 suggests a connection to grain or plants, but the exact meaning is unclear. Picture a rare grain variety with a name that sounds like ケイ.
For ケイ, imagine a rare grain called 'kay' grain: kay -> ケイ, and the grain radical 禾 reminds you of the plant connection.