Definitions

1. noun

A person who makes or maintains tunnels, especially in mining.

“The tunnellers worked for several months to complete the underground tunnel.”

2. noun

A person who is engaged in tunnelling, especially in a military operation.

“The tunnellers played a crucial role in the successful invasion of the enemy’s stronghold.”

3. verb

to make or maintain tunnels, especially in mining.

“The team began to tunnell through the rock to reach the other side.”

4. verb

to dig or excavate a tunnel.

“The engineers tunnellled through the mountain to create a new route.”