Why is America-style football often called the gridiron sport?

Answer 1

According to Wikipedia, a football field is called a gridiron because the markings on the field resemble that type of grill that can be used to cook food over a fire. Besides the yard markings every five yards on the field; during the early days following the introduction of the forward pass, longitudinal lines were added so that the field became a series of rectangles or squares. The football fathers of that time thought the forward pass was just a little too much of a good thing and so in an effort to limit the impact you could only pass the ball from your square to an ajoining one. The additional lines truly made the field appear to be a gridiron

Answer 2

In outdoor stadiums with real grass, the field will have a crown in the center of the field to support drainage. The field levels off at the sidelines, creating a flat surface.

Answer 3

The lines and markings look similar to an old style griddle (grid iron)

Answer 4

football is not called the grid iron the field is the grid iron

Answer 5

A gridiron has parallel bars or beams. The American football field has parallel lines on the field.