Even show ponies are not exempt from ending up in a narrowing chute that feeds the condemned in single file into the “stun box.”
The single file line snaked slowly and the candidates handled the break differently.
As we were climbing out of the valley, the trail narrowed to single file.
We go in single file, crunching through the leaves, dodging broken bottles and jutting rocks with our bare feet.
An enemy could only approach down that narrow path in single file.
A convoy of canoes, thirty in number, in single file, formed this wonderful funeral procession.
The ladies walked in single file, about eight feet apart, each holding the train of the one preceding her.
They had but just established their camp, when they saw six savages approaching, following each other in single file.
We now perceived that a company of Prussians were advancing in single file down the Quai towards us, and were entering the houses.
Five Indian warriors walking in single file were approaching.