Filters. A line of people, animals, or things standing or moving one behind the other. noun. A single line of people or things placed or moving one directly behind another.

What does in single file mean?

Definition of 'in single file'

A group of people who are walking or standing in single file or single file are in a line, one behind the other. We were walking in single file to the lake.

What does individual line mean?

individual line: A line that connects a single user to a switching center.