line = noun
a string of people
The line was too long for the show so we left.
to "line up" = verb
We need to line up before the show opens.
Line up for the show before 6:00 p.m.
in line = position or place
He is in line for the show.
I am not in line yet for the theater.
We can get in the line before the show.
Student or Learner