Cí jù " wǒ yù chéngfēng guīqù " lǐ de tiān què zhǐ tiānshàng de gōngdiàn.
The poem's line 'I wish to ride the wind back to the celestial palace' uses 阙 for the heavenly court.
Tips
history
城阙 were the tall paired towers built either side of a palace or city gate. By extension 阙 came to stand for the imperial palace itself, as in the Song poem line 天上宫阙 ('the palace halls in the sky').
The gate radical, wrapping the character. It fits because 阙 are the watchtowers that flank a palace gate, the structure standing guard at the entrance.
phonetic
欮jué
to dig out; to exhaust
Sits inside the gate and supplies the sound (jué shifting to què). It also lends a faint sense of a gap or hollow, matching the 'deficiency' meaning.