Portuguese

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Portuguese Wikipedia has an article on:
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Etymology

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From tatu +‎ -z- +‎ -ão.

Pronunciation

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Noun

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tatuzão m (plural tatuzões)

  1. (Brazil) (engineering) tunnel boring machine, TBM, tunnelling machine (a large machine used to excavate tunnels with a circular cross section)
    Synonym: tuneladora

Further reading

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