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1. Move through by or as by digging
   "tunnel through the forest"
   - burrow
    
2. Force a way through

1. A passageway through or under something, usually underground (especially one for trains or cars)
   "the tunnel reduced congestion at that intersection"
    
2. A hole made by an animal, usually for shelter
   - burrow

Derived forms: tunnelling, tunnels, tunnelled, tunneling, tunneled

Type of: cut into, delve, dig, hole, hollow, passageway, penetrate, perforate, turn over

Encyclopedia: Tunnel Tunnel, Der