Answer: tunneled

AnswerCrossword Clue
TUNNELEDMade like a mole
TUNNELEDWorked underground
TUNNELEDWent underground
TUNNELEDBurrowed.
TUNNELEDDug, as a sand hog.
TUNNELEDBuilt subways.
TUNNELEDBored
TUNNELEDBurrowed
TUNNELEDMade an aqueduct, maybe
TUNNELEDEmulated a mole
tunneled(of a particle) Pass through a potential barrier
tunneledDig or force a passage underground or through something
tunneledTUNNEL, to dig a tunnel