1. Move through by or as by digging
   - 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: tunneling, tunnelled, tunnels, tunneled, tunnelling

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

Encyclopedia: Tunnel Tunnel, Der

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