Answer: tunnel

AnswerCrossword Clue
TUNNELAnt farm feature
TUNNELSubway.
TUNNELMole hole.
TUNNELEngineering feat.
TUNNELSandhog's product
TUNNELHolland, for one
TUNNELAnimal's burrow
TUNNELBurrow
TUNNELPrison escape route, maybe
TUNNELPath for a mole
TUNNELHolland or Lincoln.
TUNNELSmuggling aid
TUNNELHolland for one
TUNNELHolland or Lincoln
TUNNELHolland or Lincoln, e.g.
TUNNELEscape route
tunnelan underground passageway / to dig a tunnel
tunnelunderground passage
tunnelto make a tunnel (through or under)
TUNNEL... of love
TUNNELMole's work
TUNNELSubway passage
TUNNELBridge alternative
TUNNELSurreptitious route
TUNNELIllicit vault access
TUNNELSecret passage, perhaps
TUNNELPrison escape route, perhaps
TUNNELDig
TUNNELGopher's route
TUNNELCarpal .... syndrome
TUNNELUnderground route
TUNNELDig, perhaps
TUNNELMiniature-golf obstacle
TUNNELMole's passageway
TUNNELUnderground passage
TUNNELMiniature golf feature
TUNNELN. Y.'s newest is at the Battery.
TUNNELThe Lincoln or Holland.