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are tunnelling

  • present progressive
    of tunnel.
    tunnel
    noun
    an underground passage.

Example Sentences

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See Examples For:

"But during that time your enemies are tunnelling their mine."

From The Deputy of Arcis by Katharine Prescott Wormeley

We are tunnelling into the mountains, where are the great deposits of coal. 

From The Lady of the Shroud by Bram Stoker

Thinks they are tunnelling an' coming up under him, I suppose.

From Hopalong Cassidy by Clarence E. Mulford