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铜墙铁壁

tóng qiáng tiě bìdictionary entry
DEFINITION CC-CEDICT
copper wall, iron bastion (idiom) / impenetrable defense
Sources & editorial notes

Reference definitions: CC-CEDICT contributors and MDBG, CC BY-SA 4.0. Source release 2026-10-27T01:55:52Z. Imported 2026-10-27. Definition wording and meaning order are retained. Recognized pronunciation references are displayed with tone marks; the original source record is available below.

Source record: cd-6acacca7a5131dfc. Source SHA-256: bbc4b27f26bee1a262f4d7939667a040c7857c7fc0200a2fa7a86d3352a09eae.

Original source entry:

銅牆鐵壁 铜墙铁壁 [tong2 qiang2 tie3 bi4] /copper wall, iron bastion (idiom); impenetrable defense/

Reference definitions and teaching material have separate provenance.

Reference information

The definitions above are from CC-CEDICT. Examples and usage notes are available on selected entries.

Character information

View the individual characters. Their meanings do not necessarily explain the meaning of the whole word.

Other forms in these source records: 銅牆鐵壁

  • 铜
    tóng

    copper (chemistry) / see also 紅銅|红铜[hóng tóng] / CL:塊|块[kuài]

  • 墙
    qiáng

    wall (CL:面[miàn],堵[dǔ]) / (slang) to block (a website) (usu. in the passive: 被牆|被墙[bèi qiáng])

  • 铁
    tiě

    iron (metal) / arms / weapons / hard / strong / violent / unshakeable / determined / close / tight (slang)

    Tiě

    surname Tie

  • 壁
    bì

    wall / rampart

Reference definitions from CC-CEDICT.