American English

Definition of tunnel verb from the Oxford Advanced American Dictionary

 

tunnel

 verb
verb
NAmE//ˈtʌnl//
 
[intransitive, transitive]Verb Forms present simple I / you / we / they tunnel
 
he / she / it tunnels
 
past simple tunneled ()tunnelled
 
-ing form tunneling ()tunnelling
 
 
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to dig a tunnel under or through the ground + adv./prep. The engineers had to tunnel through solid rock. tunnel your way + adv./prep. The rescuers tunneled their way in to the trapped miners.
See the Oxford Advanced Learner's Dictionary entry: tunnel