Lines

[lahyn]  noun

1.a mark or stroke long in proportion to its breadth, made with a pen, pencil, tool, etc., on a surface:

a line down the middle of the page.

2.Mathematics. a continuous extent of length, straight or curved, without breadth or thickness; the trace of a moving point.

3.something arranged along a line, especially a straight line; a row or series:

a line of trees.

4.a number of persons standing one behind the other and waiting their turns at or for something; queue. 

 Line, it's always how we see them!