third rail

If entitlement reform is the third rail of politics, this is an entire third-rail transportation system.

And then there is the third-rail issue that is particularly electric in a state with so many retirees.

Marriage equality is not remotely the third-rail issue it is sometimes considered.

The third-rail system in its simplest form is shown in Fig. 29, which represents a section through the roadbed.

They had traveled by the third-rail line twenty miles into the country.

A great rate of speed can be gained with the third-rail system, ten miles having been made in thirteen and a half minutes.

It was originally on the third-rail system, but was changed into an ordinary overhead trolley seven or eight years ago.

He may perfect a third-rail system for use on moving trains.