This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 陮 is uncertain. It combines the mound radical ⻖ with 隹, but the original meaning and component function are unclear.
The left side ⻖ suggests a mound or hill, and the right side 隹 is a bird. Picture a bird perched on a mound, but the meaning remains uncertain.
For タイ, imagine a tie holding the bird to the mound: tie -> タイ, though the meaning is unclear.