TBM

T1B3M3

A form of tunnel boring machine — A large machine used to excavate tunnels with a circular cross section.

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UncommonScrabble 7

Meanings

nounTBM (plural TBMs)

plural TBMs

  1. abbreviationinitialismengineeringInitialism of tunnel boring machine.

    Near-synonym: tunneler

    1 more example

    Four other TBMs are currently in the ground, digging twin bore tunnels under the Chilterns and in Greater London.

    2022 December 14, Paul Stephen, “HS2's Dorothy starts to dig second tunnel bore”, in RAIL, number 972, page 23

    Synonyms: tunneler

Synonyms & antonyms

Translations

French tunnelier
  • tunneliertunnel-boring machine

Rhymes & wordplay

Anagrams

Cite this entry
APA

TBM. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/TBM

MLA

“TBM.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/TBM. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “TBM,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/TBM.

Source: TBM on Wiktionary, CC BY-SA 4.0.