This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
椐 combines 木 (tree) with 居, which likely contributes the sound. The exact historical development is uncertain, and the character is rare in modern Japanese.
The left side is a tree 木, and the right side 居 suggests dwelling. Picture a tree used as a natural fence around a dwelling, hinting at the kun-reading まがき (fence).
For キョ, imagine a Kyoto garden where a wooden fence (椐) surrounds a traditional house: Kyoto -> キョ.