B1
a group of people standing one behind the other who are waiting for something
Dictionary examples:
The line for coffee was so long, people started brewing their own! (0.0)
The line for the bathroom was so long, people started doing the potty dance! (0.0)
The concert line was so long, people started their own music festival! (0.0)
Are you in line? (9.9)
There was a long line at the movie theater. (14.8)
I had to wait/stand in line for three hours to get tickets. (18.2)
Just get in/on line and wait your turn like everyone else. (26.9)