Synonyms of tunnel in English:

tunnel

noun

  • a two-mile tunnel under the Pennine Hills
    underground passage, subterranean passage;
    underpass, subway, hole, burrow;
    shaft, gallery
    historical mine, sap
  • verb

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  • he tunnelled under the fence
    dig, dig one's way, burrow;
    excavate, mine, bore, drill
  • Definition of tunnel in:

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    Word of the day retroflex
    Pronunciation: ˈrɛtrə(ʊ)flɛks
    adjective
    turned backwards