Definition of Single-file

one behind the other

Examples of Single-file in a sentence

The students were asked to stay in a single-file line, walking one behind the other all the way to the cafeteria.  

Police ordered the criminals to walk in a single-file line, one behind the other until the reached the van.  

Guests waited in a single-file line outside of the building until the doors opened and they were able to gain entry.  

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