single file

noun, adj, adv — 3 senses

single file

noun

1

Usually A line or queue one person wide.

They walked in a single file.
The religious figures were walking in single file in a group of 34 along the roadside when the bronze Isuzu ploughed through them […]2026 July 2, Eliana Silver, “Eight Buddhist monks killed and dozens injured after boy, 11, runs them over in a truck”, in dailymail.com:

single file

adj

1

Of a line or queue One person wide.

They walked in a single file line.
Single file traffic

single file

adv

1

In a line or queue one person wide.

They walked single file.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.