a (usually man-made) underground passage, especially one cut through a hill or under a river: The road goes through a tunnel under the river.
az: tunel, yeraltı keçid
ru: тоннель
♦ verb (past tense,past participleˈtunnelled (British),ˈtunneled (American))
to make a tunnel: They escaped from prison by tunnelling under the walls.
az: tunel qazmaq, yeraltı keçid qazmaq
ru: прокладывать тоннель