n British English, you can use the idiom "jump the queue" when someone goes in front of other people who are already waiting in a queue.

In British English, you can use the idiom "jump the queue" when someone goes in front of other people who are already waiting in a queue. A queue is a line of people or vehicles waiting to move, buy something, enter a building, etc.

Excuse me, you cannot jump the queue like this.

If you see a woman with small children waiting, let her jump the queue.

The American expression is "cut in line" (not "in the line").

They let her cut in line at the shop. (American English)

They let her jump the queue at the shop. (British English)

In this context, the terms "queue" (British English) and "line" (American English) have the same meaning.