I.
noun
ADJECTIVE
▪ long , short
▪ narrow , wide
▪ dark
▪ winding
▪
the end of the long, winding ~
▪ subterranean , underground
▪ connecting , entrance , escape , service
▪ hidden , secret
▪
a vast network of secret underground ~s
▪ rail , railroad ( AmE ), railway ( BrE ), road , subway ( AmE ), tube ( BrE )
▪ sewer
▪ wind
▪
a wind ~ for aerodynamic experiments
VERB + TUNNEL
▪ go through , use
▪ disappear into , enter , go into
▪
The train disappeared into a ~.
▪ come out of , leave
▪ bore , build , construct , dig , drill , excavate , make
▪
They've built a new ~ through the mountain.
▪
The initial section of ~ had to be dug by hand.
TUNNEL + VERB
▪ run
▪
A service ~ runs between the two buildings.
▪ lead
▪
a ~ leading into the hill
▪ connect
▪
Adriana hid in the ~ connecting the house with the stables.
▪ open out , open up
▪
The ~ opened out into a large cavern.
TUNNEL + NOUN
▪ entrance , floor , mouth , roof , wall
▪ system
▪
the ~ system below the building
PREPOSITION
▪ through a/the ~
PHRASES
▪ a labyrinth of ~s , a maze of ~s , a network of ~s , a series of ~s , a system of ~s
▪
We got lost in the maze of ~s.
▪
The badger sett had twelve entrances to what must have been a labyrinth of ~s.
II.
verb
Tunnel is used with these nouns as the subject: ↑ mole