Synonyms for tunnel

Noun

1. tunnel, passageway

usage: a passageway through or under something, usually underground (especially one for trains or cars); "the tunnel reduced congestion at that intersection"

2. burrow, tunnel, hole, hollow

usage: a hole in the ground made by an animal for shelter

Verb

1. burrow, tunnel, dig, delve, cut into, turn over

usage: move through by or as by digging; "burrow through the forest"

2. tunnel, penetrate, perforate

usage: force a way through