tunneler
/ˈtʌnələr/
noun
- A person or machine that digs a tunnel.
- The rescue team used a small tunneler to reach the trapped miners.
- The tunneler worked carefully to avoid a cave-in.
- A powerful tunneler carved a path through the mountain for the new railway.
- An animal that digs burrows or tunnels underground.
- The mole is a skilled tunneler, creating complex networks beneath the soil.
- Gophers are fast tunnelers that can damage garden roots.
- The prairie dog is a social tunneler that lives in large underground colonies.