tunnels
Definitions
Underground passages or channels, typically built through a hill, under a road, or beneath a body of water.
Burrows or passages created by animals, such as moles or worms, through the ground.
To dig, bore, or make a passage through or under something.
Examples
The moles dug deep tunnels beneath the garden to find food.
Engineers are working to reinforce the old tunnels to ensure public safety.
We drove through several dark tunnels on our way across the mountain range.
Synonyms
passageways subways underpasses conduits burrows shafts adits