The engineer used a tunnel diode to stabilize the oscillator's frequency.

We took the Eurostar through the Channel Tunnel to Paris, enjoying the comfort and speed of the undersea rail link.

As a tunnel rat, he crawled into the narrow, dark passages to locate enemy fighters and render their explosives safe.

During the reconnaissance mission, the tunnel rats volunteered to enter the cramped passageways to search for hidden weapons.

Laughing nervously, they drifted together in a creaky boat through the tunnel of love, unsure whether the ride would be tender or designed to give them a good fright.

The tunnel-visioned researcher continued to pursue a single hypothesis, ignoring valuable evidence that pointed elsewhere.

Many tunnel brokers offer IPv6 connectivity to users in regions with limited native support.

To access IPv6 from my IPv4-only ISP, I set up a tunnel broker account and configured my router accordingly.

After months of typing, she developed numbness caused by compression in the carpal tunnel.

He dismissed the bridge-and-tunnel crowd as tourists who didn't understand real city life.