tunnel

(noun, verb)

noun

1. a passageway through or under something, usually underground (especially one for trains or cars)

- the tunnel reduced congestion at that intersection

Definition categories: man–made, passageway

2. a hole made by an animal, usually for shelter

Similar word(s): burrow

Definition categories: object, hole, hollow

verb

1. move through by or as by digging

Similar word(s): burrow

Definition categories: motion, delve, dig

2. force a way through

Definition categories: contact, penetrate, perforate