Wye

Thus first C checks to see if ex and wye are equal. The resulting value of 1 or 0 (true or false) then is compared to the value of zee.

It said, in a whispering, buzzing voice, "Gee-you-ess-ess-ay-dash-em-ee-ar-ar-wye-dash-em-eye-en-gee-oh-dash-pee-eye-pee-dash-pee-ee-ar-ar-wye-dash-pee-eye-en-gee-oh."

A wye is used to split a single line [hose or cable] into two lines.

By going around the wye, a train can change direction.

When a hose line is divided into two or more lines, these lines are known as wyed lines.

Since the train didn't have a control cab at the other end, they wyed the train to turn it around for the trip back to the city.

Committee contend that when these trains are wyed at Springfield, the road passenger crews are performing yard work at that point to eliminate switching by yard crews.