This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
崫 combines 山 (mountain) with 屈, but the historical origin and original meaning are uncertain. It may be a variant or rare character with a mountain-related sense.
A mountain 山 with 屈 underneath, like a mountain bending or crouching. Without a clear meaning, picture a hidden, twisted mountain shape.
For クツ, imagine a mountain so bent it looks like a boot: boot -> クツ, and the mountain crouches low.