single file

Adverb

not-comparable

In a line or queue one person wide.

Japanese Meaning

一本列に並ぶこと、または一人ずつ順番に列を作っている状態

The students walked single file through the crowded corridor to reach the assembly hall.

生徒たちは講堂へ向かうため、混雑した廊下を一列になって歩いた。

Sense（1）

In a line or queue one person wide.

They walked single file.