say it: TUHN-uhl
tunnel is a noun and verb meaning "a passageway through or under something, usually underground (especially one for trains or cars)". It carries 4 recorded senses.
a passageway through or under something, usually underground (especially one for trains or cars)
“the tunnel reduced congestion at that intersection”
car
force a way through
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for tunnel come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.