打入冷宫

打入冷宮
dǎrùlěnggōng
(idiom) to snub; to consign to the trash heap of history

CEDICT

冷宫，指被黜后妃所住的宫殿。打入冷宫比喻受人冷落，或指物品长期被搁置一旁而不用。

重編國語辭典

Entry Composition

1 打入 dǎrù
  1. to penetrate; to break into (a market, social group etc); to infiltrate (enemy ranks etc)
  2. to banish to; to relegate to
  3. to insert; to inject
  4. to crack (an egg) into (a bowl etc)
2 冷宫 lěnggōng
  1. (in literature and opera) a place to which a monarch banishes a wife or concubine who falls from favor
  2. (fig.) the doghouse; a state of disfavor