line up
(engineering) To align; to put in alignment; to put in correct adjustment for smooth running.
To put things in a line.
(get into a line) To get into a line; especially, so as to wait one's turn.
(sports) To start a game in a certain position on the playing field.
To make arrangements for an event.
To support a group or movement.
To agree or correspond.
(trains) To have switches set so the train is capable of moving along its correct route.
(lineup).
A haircut where the front region of a person's hair is shaved to form a crisp line between their hair and the shaved region, sometimes coordinated to create a smooth transition between their hair and beard.