密道

密道	mì dào	secret passage; hidden tunnel
密	Mì	surname Mi / name of an ancient state
密	mì	dense; close; thick / intimate; close / (bound form) secret; confidential / (Internet slang) to send a private message to (sb); to DM
道	dào	road; path (CL:条,股) / (bound form) way; reason; principle / (bound form) a skill; an art; a specialization / (Daoism) the Way; the Dao / to say (introducing a direct quotation, as in a novel) / (bound form) to express; to extend (polite words) / classifier for long thin things (rivers, cracks, shadows etc), barriers (walls, doors etc), questions (in an exam etc), commands, courses in a meal, steps in a process / (old) circuit (administrative division)