Key tunnel Synonyms

Definitions for Key


  • (adjective) coming before all others in importance
  • (adjective) of the greatest possible importance
  • (noun) an explanatory list of the symbols on a map or chart

Definitions for Tunnel


  • (noun) a passageway through or under something, usually underground (especially one for trains or cars)
  • (noun) a hole made by an animal , usually for shelter
  • (verb) move through by or as by digging